161426662425 has 96 divisors (see below), whose sum is σ = 358846675200. Its totient is φ = 69454126080.

The previous prime is 161426662409. The next prime is 161426662499. The reversal of 161426662425 is 524266624161.

It is not a de Polignac number, because 161426662425 - 2⁴ = 161426662409 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 924510 + ... + 1085159.

It is an arithmetic number, because the mean of its divisors is an integer number (3737986200).

Almost surely, 2^161426662425 is an apocalyptic number.

161426662425 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

161426662425 is an abundant number, since it is smaller than the sum of its proper divisors (197420012775).

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

161426662425 is a wasteful number, since it uses less digits than its factorization.

161426662425 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2009712 (or 2009701 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The spelling of 161426662425 in words is "one hundred sixty-one billion, four hundred twenty-six million, six hundred sixty-two thousand, four hundred twenty-five".