27719379885 has 16 divisors (see below), whose sum is σ = 44353898496. Its totient is φ = 14782705728.

The previous prime is 27719379859. The next prime is 27719379887. The reversal of 27719379885 is 58897391772.

It is not a de Polignac number, because 27719379885 - 2⁷ = 27719379757 is a prime.

It is a super-2 number, since 2×27719379885² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27719379887) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 219507 + ... + 321903.

It is an arithmetic number, because the mean of its divisors is an integer number (2772118656).

Almost surely, 2^27719379885 is an apocalyptic number.

It is an amenable number.

27719379885 is a deficient number, since it is larger than the sum of its proper divisors (16634518611).

27719379885 is a wasteful number, since it uses less digits than its factorization.

27719379885 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120452.

The product of its digits is 53343360, while the sum is 66.

The spelling of 27719379885 in words is "twenty-seven billion, seven hundred nineteen million, three hundred seventy-nine thousand, eight hundred eighty-five".