27506851428 has 96 divisors (see below), whose sum is σ = 80171900928. Its totient is φ = 7158182400.

The previous prime is 27506851349. The next prime is 27506851469. The reversal of 27506851428 is 82415860572.

It is a zygodrome in base 9.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 266418 + ... + 354953.

It is an arithmetic number, because the mean of its divisors is an integer number (835123968).

Almost surely, 2^27506851428 is an apocalyptic number.

27506851428 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

27506851428 is an abundant number, since it is smaller than the sum of its proper divisors (52665049500).

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

27506851428 is a wasteful number, since it uses less digits than its factorization.

27506851428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 621433 (or 621431 counting only the distinct ones).

The product of its (nonzero) digits is 1075200, while the sum is 48.

The spelling of 27506851428 in words is "twenty-seven billion, five hundred six million, eight hundred fifty-one thousand, four hundred twenty-eight".