60889021906 has 4 divisors (see below), whose sum is σ = 91333532862. Its totient is φ = 30444510952.

The previous prime is 60889021883. The next prime is 60889021909. The reversal of 60889021906 is 60912098806.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 44043318225 + 16845703681 = 209865^2 + 129791^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 60889021906.

It is not an unprimeable number, because it can be changed into a prime (60889021909) 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 as a sum of consecutive naturals, namely, 15222255475 + ... + 15222255478.

Almost surely, 2^60889021906 is an apocalyptic number.

60889021906 is a deficient number, since it is larger than the sum of its proper divisors (30444510956).

60889021906 is a wasteful number, since it uses less digits than its factorization.

60889021906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30444510955.

The product of its (nonzero) digits is 373248, while the sum is 49.

The spelling of 60889021906 in words is "sixty billion, eight hundred eighty-nine million, twenty-one thousand, nine hundred six".