254128153956 has 24 divisors (see below), whose sum is σ = 618746810304. Its totient is φ = 81026367840.

The previous prime is 254128153949. The next prime is 254128153969. The reversal of 254128153956 is 659351821452.

It is a happy number.

It is a super-2 number, since 2×254128153956² (a number of 24 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 254128153899 and 254128153908.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 460376815 + ... + 460377366.

It is an arithmetic number, because the mean of its divisors is an integer number (25781117096).

Almost surely, 2^254128153956 is an apocalyptic number.

It is an amenable number.

254128153956 is an abundant number, since it is smaller than the sum of its proper divisors (364618656348).

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

254128153956 is a wasteful number, since it uses less digits than its factorization.

254128153956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 920754211 (or 920754209 counting only the distinct ones).

The product of its digits is 2592000, while the sum is 51.

The spelling of 254128153956 in words is "two hundred fifty-four billion, one hundred twenty-eight million, one hundred fifty-three thousand, nine hundred fifty-six".