161458601572 has 12 divisors (see below), whose sum is σ = 282675578220. Its totient is φ = 80694150656.

The previous prime is 161458601567. The next prime is 161458601573. The reversal of 161458601572 is 275106854161.

It can be written as a sum of positive squares in 2 ways, for example, as 109485544996 + 51973056576 = 330886^2 + 227976^2 .

It is not an unprimeable number, because it can be changed into a prime (161458601573) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8777197 + ... + 8795572.

It is an arithmetic number, because the mean of its divisors is an integer number (23556298185).

Almost surely, 2^161458601572 is an apocalyptic number.

It is an amenable number.

161458601572 is a deficient number, since it is larger than the sum of its proper divisors (121216976648).

161458601572 is a wasteful number, since it uses less digits than its factorization.

161458601572 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17575070 (or 17575068 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 46.

The spelling of 161458601572 in words is "one hundred sixty-one billion, four hundred fifty-eight million, six hundred one thousand, five hundred seventy-two".