27679292639 has 4 divisors (see below), whose sum is σ = 27855594024. Its totient is φ = 27502991256.

The previous prime is 27679292633. The next prime is 27679292681. The reversal of 27679292639 is 93629297672.

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

It is a cyclic number.

It is not a de Polignac number, because 27679292639 - 2⁸ = 27679292383 is a prime.

It is a super-2 number, since 2×27679292639² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27679292633) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 88150457 + ... + 88150770.

It is an arithmetic number, because the mean of its divisors is an integer number (6963898506).

Almost surely, 2^27679292639 is an apocalyptic number.

27679292639 is a deficient number, since it is larger than the sum of its proper divisors (176301385).

27679292639 is a wasteful number, since it uses less digits than its factorization.

27679292639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 176301384.

The product of its digits is 30862944, while the sum is 62.

The spelling of 27679292639 in words is "twenty-seven billion, six hundred seventy-nine million, two hundred ninety-two thousand, six hundred thirty-nine".