172074403136 has 28 divisors (see below), whose sum is σ = 341642882880. Its totient is φ = 85991157120.

The previous prime is 172074403073. The next prime is 172074403139. The reversal of 172074403136 is 631304470271.

It is a happy number.

It is a super-2 number, since 2×172074403136² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 172074403136.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (172074403139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 598766 + ... + 838253.

Almost surely, 2^172074403136 is an apocalyptic number.

172074403136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

172074403136 is a deficient number, since it is larger than the sum of its proper divisors (169568479744).

172074403136 is a wasteful number, since it uses less digits than its factorization.

172074403136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1438902 (or 1438892 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 38.

The spelling of 172074403136 in words is "one hundred seventy-two billion, seventy-four million, four hundred three thousand, one hundred thirty-six".