172400762881 has 8 divisors (see below), whose sum is σ = 178058780064. Its totient is φ = 166817686560.

The previous prime is 172400762869. The next prime is 172400762893. The reversal of 172400762881 is 188267004271.

It is an interprime number because it is at equal distance from previous prime (172400762869) and next prime (172400762893).

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 172400762881 - 2²⁵ = 172367208449 is a prime.

It is a super-2 number, since 2×172400762881² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172400760881) 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 7 ways as a sum of consecutive naturals, for example, 18730540 + ... + 18739741.

It is an arithmetic number, because the mean of its divisors is an integer number (22257347508).

Almost surely, 2^172400762881 is an apocalyptic number.

It is an amenable number.

172400762881 is a deficient number, since it is larger than the sum of its proper divisors (5658017183).

172400762881 is a wasteful number, since it uses less digits than its factorization.

172400762881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37470431.

The product of its (nonzero) digits is 301056, while the sum is 46.

The spelling of 172400762881 in words is "one hundred seventy-two billion, four hundred million, seven hundred sixty-two thousand, eight hundred eighty-one".