172214770257 has 12 divisors (see below), whose sum is σ = 248949176320. Its totient is φ = 114720073848.

The previous prime is 172214770241. The next prime is 172214770271. The reversal of 172214770257 is 752077412271.

172214770257 is a `hidden beast` number, since 172 + 2 + 1 + 477 + 0 + 2 + 5 + 7 = 666.

It is not a de Polignac number, because 172214770257 - 2⁴ = 172214770241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172214770297) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 7468933 + ... + 7491954.

Almost surely, 2^172214770257 is an apocalyptic number.

It is an amenable number.

172214770257 is a deficient number, since it is larger than the sum of its proper divisors (76734406063).

172214770257 is a wasteful number, since it uses less digits than its factorization.

172214770257 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14962172 (or 14962169 counting only the distinct ones).

The product of its (nonzero) digits is 384160, while the sum is 45.

The spelling of 172214770257 in words is "one hundred seventy-two billion, two hundred fourteen million, seven hundred seventy thousand, two hundred fifty-seven".