161059147972 has 12 divisors (see below), whose sum is σ = 285020402940. Its totient is φ = 79624747136.

The previous prime is 161059147957. The next prime is 161059147987. The reversal of 161059147972 is 279741950161.

It is an interprime number because it is at equal distance from previous prime (161059147957) and next prime (161059147987).

It can be written as a sum of positive squares in 2 ways, for example, as 14656492096 + 146402655876 = 121064^2 + 382626^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 226206313 + ... + 226207024.

It is an arithmetic number, because the mean of its divisors is an integer number (23751700245).

Almost surely, 2^161059147972 is an apocalyptic number.

It is an amenable number.

161059147972 is a deficient number, since it is larger than the sum of its proper divisors (123961254968).

161059147972 is a wasteful number, since it uses less digits than its factorization.

161059147972 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 452413430 (or 452413428 counting only the distinct ones).

The product of its (nonzero) digits is 952560, while the sum is 52.

The spelling of 161059147972 in words is "one hundred sixty-one billion, fifty-nine million, one hundred forty-seven thousand, nine hundred seventy-two".