172072700055 has 64 divisors (see below), whose sum is σ = 316256793600. Its totient is φ = 88700054400.

The previous prime is 172072700053. The next prime is 172072700077. The reversal of 172072700055 is 550007270271.

It is not a de Polignac number, because 172072700055 - 2¹ = 172072700053 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 172072699992 and 172072700019.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172072700053) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 640176 + ... + 868314.

It is an arithmetic number, because the mean of its divisors is an integer number (4941512400).

Almost surely, 2^172072700055 is an apocalyptic number.

172072700055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

172072700055 is a deficient number, since it is larger than the sum of its proper divisors (144184093545).

172072700055 is a wasteful number, since it uses less digits than its factorization.

172072700055 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228341 (or 228335 counting only the distinct ones).

The product of its (nonzero) digits is 34300, while the sum is 36.

The spelling of 172072700055 in words is "one hundred seventy-two billion, seventy-two million, seven hundred thousand, fifty-five".