172424156907 has 16 divisors (see below), whose sum is σ = 239071610880. Its totient is φ = 110404576800.

The previous prime is 172424156899. The next prime is 172424156941. The reversal of 172424156907 is 709651424271.

It is not a de Polignac number, because 172424156907 - 2³ = 172424156899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (172424156977) 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, 5171569 + ... + 5204802.

It is an arithmetic number, because the mean of its divisors is an integer number (14941975680).

Almost surely, 2^172424156907 is an apocalyptic number.

172424156907 is a deficient number, since it is larger than the sum of its proper divisors (66647453973).

172424156907 is a wasteful number, since it uses less digits than its factorization.

172424156907 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10376594.

The product of its (nonzero) digits is 846720, while the sum is 48.

The spelling of 172424156907 in words is "one hundred seventy-two billion, four hundred twenty-four million, one hundred fifty-six thousand, nine hundred seven".