254490865161 has 32 divisors (see below), whose sum is σ = 372406446720. Its totient is φ = 153618177024.

The previous prime is 254490865151. The next prime is 254490865163. The reversal of 254490865161 is 161568094452.

It is not a de Polignac number, because 254490865161 - 2¹¹ = 254490863113 is a prime.

It is not an unprimeable number, because it can be changed into a prime (254490865163) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10444785 + ... + 10469121.

It is an arithmetic number, because the mean of its divisors is an integer number (11637701460).

Almost surely, 2^254490865161 is an apocalyptic number.

It is an amenable number.

254490865161 is a deficient number, since it is larger than the sum of its proper divisors (117915581559).

254490865161 is a wasteful number, since it uses less digits than its factorization.

254490865161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29465.

The product of its (nonzero) digits is 2073600, while the sum is 51.

The spelling of 254490865161 in words is "two hundred fifty-four billion, four hundred ninety million, eight hundred sixty-five thousand, one hundred sixty-one".