27699346638 has 24 divisors (see below), whose sum is σ = 60166438488. Its totient is φ = 9209855952.

The previous prime is 27699346603. The next prime is 27699346643. The reversal of 27699346638 is 83664399672.

27699346638 is a `hidden beast` number, since 27 + 69 + 93 + 466 + 3 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1930956 + ... + 1945247.

It is an arithmetic number, because the mean of its divisors is an integer number (2506934937).

Almost surely, 2^27699346638 is an apocalyptic number.

27699346638 is an abundant number, since it is smaller than the sum of its proper divisors (32467091850).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27699346638 is a wasteful number, since it uses less digits than its factorization.

27699346638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3876608 (or 3876605 counting only the distinct ones).

The product of its digits is 70543872, while the sum is 63.

The spelling of 27699346638 in words is "twenty-seven billion, six hundred ninety-nine million, three hundred forty-six thousand, six hundred thirty-eight".