254747253664 has 24 divisors (see below), whose sum is σ = 517712162688. Its totient is φ = 123264799680.

The previous prime is 254747253661. The next prime is 254747253679. The reversal of 254747253664 is 466352747452.

It is a super-2 number, since 2×254747253664² (a number of 24 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (55) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (254747253661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 128399842 + ... + 128401825.

It is an arithmetic number, because the mean of its divisors is an integer number (21571340112).

Almost surely, 2^254747253664 is an apocalyptic number.

It is an amenable number.

254747253664 is an abundant number, since it is smaller than the sum of its proper divisors (262964909024).

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

254747253664 is a wasteful number, since it uses less digits than its factorization.

254747253664 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 256801708 (or 256801700 counting only the distinct ones).

The product of its digits is 33868800, while the sum is 55.

The spelling of 254747253664 in words is "two hundred fifty-four billion, seven hundred forty-seven million, two hundred fifty-three thousand, six hundred sixty-four".