253995677568 has 48 divisors (see below), whose sum is σ = 730899023400. Its totient is φ = 84665225472.

The previous prime is 253995677563. The next prime is 253995677581. The reversal of 253995677568 is 865776599352.

253995677568 is a `hidden beast` number, since 2 + 5 + 3 + 9 + 9 + 56 + 7 + 7 + 568 = 666.

It is a tau number, because it is divible by the number of its divisors (48).

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a junction number, because it is equal to n+sod(n) for n = 253995677496 and 253995677505.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253995677563) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 110240028 + ... + 110242331.

Almost surely, 2^253995677568 is an apocalyptic number.

It is an amenable number.

253995677568 is an abundant number, since it is smaller than the sum of its proper divisors (476903345832).

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

253995677568 is a wasteful number, since it uses less digits than its factorization.

253995677568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 220482379 (or 220482364 counting only the distinct ones).

The product of its digits is 857304000, while the sum is 72.

The spelling of 253995677568 in words is "two hundred fifty-three billion, nine hundred ninety-five million, six hundred seventy-seven thousand, five hundred sixty-eight".