172804281375 has 128 divisors (see below), whose sum is σ = 332884131840. Its totient is φ = 78780240000.

The previous prime is 172804281373. The next prime is 172804281409. The reversal of 172804281375 is 573182408271.

It is not a de Polignac number, because 172804281375 - 2¹ = 172804281373 is a prime.

It is a super-2 number, since 2×172804281375² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172804281373) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5582190 + ... + 5613060.

It is an arithmetic number, because the mean of its divisors is an integer number (2600657280).

Almost surely, 2^172804281375 is an apocalyptic number.

172804281375 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

172804281375 is a deficient number, since it is larger than the sum of its proper divisors (160079850465).

172804281375 is a wasteful number, since it uses less digits than its factorization.

172804281375 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30982 (or 30972 counting only the distinct ones).

The product of its (nonzero) digits is 752640, while the sum is 48.

The spelling of 172804281375 in words is "one hundred seventy-two billion, eight hundred four million, two hundred eighty-one thousand, three hundred seventy-five".