172907544819 has 16 divisors (see below), whose sum is σ = 236826500768. Its totient is φ = 112131516672.

The previous prime is 172907544809. The next prime is 172907544863. The reversal of 172907544819 is 918445709271.

It is not a de Polignac number, because 172907544819 - 2¹² = 172907540723 is a prime.

It is a super-2 number, since 2×172907544819² (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 (172907544809) 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, 340839 + ... + 679695.

It is an arithmetic number, because the mean of its divisors is an integer number (14801656298).

Almost surely, 2^172907544819 is an apocalyptic number.

172907544819 is a deficient number, since it is larger than the sum of its proper divisors (63918955949).

172907544819 is a wasteful number, since it uses less digits than its factorization.

172907544819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 343494.

The product of its (nonzero) digits is 5080320, while the sum is 57.

The spelling of 172907544819 in words is "one hundred seventy-two billion, nine hundred seven million, five hundred forty-four thousand, eight hundred nineteen".