27657495940 has 24 divisors (see below), whose sum is σ = 59431458240. Its totient is φ = 10805719008.

The previous prime is 27657495937. The next prime is 27657495973. The reversal of 27657495940 is 4959475672.

It is a super-2 number, since 2×27657495940² (a number of 22 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (58) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16079080 + ... + 16080799.

It is an arithmetic number, because the mean of its divisors is an integer number (2476310760).

Almost surely, 2^27657495940 is an apocalyptic number.

27657495940 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27657495940 is an abundant number, since it is smaller than the sum of its proper divisors (31773962300).

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

27657495940 is a wasteful number, since it uses less digits than its factorization.

27657495940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32159931 (or 32159929 counting only the distinct ones).

The product of its (nonzero) digits is 19051200, while the sum is 58.

The spelling of 27657495940 in words is "twenty-seven billion, six hundred fifty-seven million, four hundred ninety-five thousand, nine hundred forty".