253445352421552 has 20 divisors (see below), whose sum is σ = 507983141707920. Its totient is φ = 122352928755008.

The previous prime is 253445352421493. The next prime is 253445352421619. The reversal of 253445352421552 is 255124253544352.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 253445352421552.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 273109215508 + ... + 273109216435.

It is an arithmetic number, because the mean of its divisors is an integer number (25399157085396).

Almost surely, 2^{253445352421552} is an apocalyptic number.

It is an amenable number.

253445352421552 is an abundant number, since it is smaller than the sum of its proper divisors (254537789286368).

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

253445352421552 is a wasteful number, since it uses less digits than its factorization.

253445352421552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 546218431980 (or 546218431974 counting only the distinct ones).

The product of its digits is 28800000, while the sum is 52.

The spelling of 253445352421552 in words is "two hundred fifty-three trillion, four hundred forty-five billion, three hundred fifty-two million, four hundred twenty-one thousand, five hundred fifty-two".