253661472324 has 72 divisors (see below), whose sum is σ = 694657978560. Its totient is φ = 77582296512.

The previous prime is 253661472227. The next prime is 253661472349. The reversal of 253661472324 is 423274166352.

253661472324 is a `hidden beast` number, since 2 + 5 + 3 + 6 + 614 + 7 + 2 + 3 + 24 = 666.

It is a self number, because there is not a number n which added to its sum of digits gives 253661472324.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1544634 + ... + 1700945.

It is an arithmetic number, because the mean of its divisors is an integer number (9648027480).

Almost surely, 2^253661472324 is an apocalyptic number.

It is an amenable number.

253661472324 is an abundant number, since it is smaller than the sum of its proper divisors (440996506236).

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

253661472324 is a wasteful number, since it uses less digits than its factorization.

253661472324 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3245769 (or 3245764 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 45.

The spelling of 253661472324 in words is "two hundred fifty-three billion, six hundred sixty-one million, four hundred seventy-two thousand, three hundred twenty-four".