172605052072 has 16 divisors (see below), whose sum is σ = 325505194740. Its totient is φ = 85803666816.

The previous prime is 172605052049. The next prime is 172605052127. The reversal of 172605052072 is 270250506271.

It can be written as a sum of positive squares in 2 ways, for example, as 172120435876 + 484616196 = 414874^2 + 22014^2 .

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, 62355933 + ... + 62358700.

Almost surely, 2^172605052072 is an apocalyptic number.

It is an amenable number.

172605052072 is a deficient number, since it is larger than the sum of its proper divisors (152900142668).

172605052072 is a wasteful number, since it uses less digits than its factorization.

172605052072 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124714812 (or 124714808 counting only the distinct ones).

The product of its (nonzero) digits is 58800, while the sum is 37.

The spelling of 172605052072 in words is "one hundred seventy-two billion, six hundred five million, fifty-two thousand, seventy-two".