56251632540 has 48 divisors (see below), whose sum is σ = 157551293088. Its totient is φ = 14995985664.

The previous prime is 56251632539. The next prime is 56251632637. The reversal of 56251632540 is 4523615265.

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, 67434 + ... + 342126.

It is an arithmetic number, because the mean of its divisors is an integer number (3282318606).

Almost surely, 2^56251632540 is an apocalyptic number.

It is an amenable number.

56251632540 is an abundant number, since it is smaller than the sum of its proper divisors (101299660548).

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

56251632540 is a wasteful number, since it uses less digits than its factorization.

56251632540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 278118 (or 278116 counting only the distinct ones).

The product of its (nonzero) digits is 216000, while the sum is 39.

The spelling of 56251632540 in words is "fifty-six billion, two hundred fifty-one million, six hundred thirty-two thousand, five hundred forty".