85552990388 has 12 divisors (see below), whose sum is σ = 150583154820. Its totient is φ = 42529231872.

The previous prime is 85552990387. The next prime is 85552990421. The reversal of 85552990388 is 88309925558.

It can be written as a sum of positive squares in 2 ways, for example, as 79151070244 + 6401920144 = 281338^2 + 80012^2 .

It is a super-3 number, since 3×85552990388³ (a number of 34 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 85552990388.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85552990387) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 61815053 + ... + 61816436.

It is an arithmetic number, because the mean of its divisors is an integer number (12548596235).

Almost surely, 2^85552990388 is an apocalyptic number.

It is an amenable number.

85552990388 is a deficient number, since it is larger than the sum of its proper divisors (65030164432).

85552990388 is a wasteful number, since it uses less digits than its factorization.

85552990388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123631666 (or 123631664 counting only the distinct ones).

The product of its (nonzero) digits is 31104000, while the sum is 62.

The spelling of 85552990388 in words is "eighty-five billion, five hundred fifty-two million, nine hundred ninety thousand, three hundred eighty-eight".