172757552642 has 4 divisors (see below), whose sum is σ = 259136328966. Its totient is φ = 86378776320.

The previous prime is 172757552567. The next prime is 172757552659. The reversal of 172757552642 is 246255757271.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 131673911161 + 41083641481 = 362869^2 + 202691^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43189388159 + ... + 43189388162.

Almost surely, 2^172757552642 is an apocalyptic number.

172757552642 is a deficient number, since it is larger than the sum of its proper divisors (86378776324).

172757552642 is an equidigital number, since it uses as much as digits as its factorization.

172757552642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86378776323.

The product of its digits is 8232000, while the sum is 53.

The spelling of 172757552642 in words is "one hundred seventy-two billion, seven hundred fifty-seven million, five hundred fifty-two thousand, six hundred forty-two".