161125202064 has 40 divisors (see below), whose sum is σ = 434337504192. Its totient is φ = 51373252480.

The previous prime is 161125202047. The next prime is 161125202101. The reversal of 161125202064 is 460202521161.

It is a super-2 number, since 2×161125202064² (a number of 23 digits) contains 22 as substring.

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, 72972267 + ... + 72974474.

Almost surely, 2^161125202064 is an apocalyptic number.

It is an amenable number.

161125202064 is an abundant number, since it is smaller than the sum of its proper divisors (273212302128).

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

161125202064 is a wasteful number, since it uses less digits than its factorization.

161125202064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145946775 (or 145946769 counting only the distinct ones).

The product of its (nonzero) digits is 5760, while the sum is 30.

The spelling of 161125202064 in words is "one hundred sixty-one billion, one hundred twenty-five million, two hundred two thousand, sixty-four".