53157272640 has 224 divisors, whose sum is σ = 170978169600. Its totient is φ = 13991018496.

The previous prime is 53157272621. The next prime is 53157272671. The reversal of 53157272640 is 4627275135.

It is a junction number, because it is equal to n+sod(n) for n = 53157272592 and 53157272601.

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, 55778404 + ... + 55779356.

It is an arithmetic number, because the mean of its divisors is an integer number (763295400).

Almost surely, 2^53157272640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 53157272640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85489084800).

53157272640 is an abundant number, since it is smaller than the sum of its proper divisors (117820896960).

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

53157272640 is a wasteful number, since it uses less digits than its factorization.

53157272640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1669 (or 1659 counting only the distinct ones).

The product of its (nonzero) digits is 352800, while the sum is 42.

The spelling of 53157272640 in words is "fifty-three billion, one hundred fifty-seven million, two hundred seventy-two thousand, six hundred forty".