172761453928 has 32 divisors (see below), whose sum is σ = 370246536000. Its totient is φ = 74031939072.

The previous prime is 172761453923. The next prime is 172761453929. The reversal of 172761453928 is 829354167271.

It is not an unprimeable number, because it can be changed into a prime (172761453923) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 312723 + ... + 665821.

It is an arithmetic number, because the mean of its divisors is an integer number (11570204250).

Almost surely, 2^172761453928 is an apocalyptic number.

It is an amenable number.

172761453928 is an abundant number, since it is smaller than the sum of its proper divisors (197485082072).

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

172761453928 is a wasteful number, since it uses less digits than its factorization.

172761453928 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 361849 (or 361845 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 55.

The spelling of 172761453928 in words is "one hundred seventy-two billion, seven hundred sixty-one million, four hundred fifty-three thousand, nine hundred twenty-eight".