27257742456 has 64 divisors (see below), whose sum is σ = 81978182400. Its totient is φ = 7378034688.

The previous prime is 27257742409. The next prime is 27257742493. The reversal of 27257742456 is 65424775272.

It is a junction number, because it is equal to n+sod(n) for n = 27257742399 and 27257742408.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4266505 + ... + 4272888.

It is an arithmetic number, because the mean of its divisors is an integer number (1280909100).

Almost surely, 2^27257742456 is an apocalyptic number.

It is an amenable number.

27257742456 is an abundant number, since it is smaller than the sum of its proper divisors (54720439944).

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

27257742456 is a wasteful number, since it uses less digits than its factorization.

27257742456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8539428 (or 8539424 counting only the distinct ones).

The product of its digits is 6585600, while the sum is 51.

The spelling of 27257742456 in words is "twenty-seven billion, two hundred fifty-seven million, seven hundred forty-two thousand, four hundred fifty-six".