172605242205136 has 80 divisors (see below), whose sum is σ = 360325043068480. Its totient is φ = 79624691020800.

The previous prime is 172605242205133. The next prime is 172605242205163. The reversal of 172605242205136 is 631502242506271.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172605242205133) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3748109311 + ... + 3748155361.

It is an arithmetic number, because the mean of its divisors is an integer number (4504063038356).

Almost surely, 2^{172605242205136} is an apocalyptic number.

172605242205136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

172605242205136 is an abundant number, since it is smaller than the sum of its proper divisors (187719800863344).

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

172605242205136 is a wasteful number, since it uses less digits than its factorization.

172605242205136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54564 (or 54558 counting only the distinct ones).

The product of its (nonzero) digits is 1209600, while the sum is 46.

The spelling of 172605242205136 in words is "one hundred seventy-two trillion, six hundred five billion, two hundred forty-two million, two hundred five thousand, one hundred thirty-six".