172464321979 has 8 divisors (see below), whose sum is σ = 175307464800. Its totient is φ = 169643654976.

The previous prime is 172464321977. The next prime is 172464322003. The reversal of 172464321979 is 979123464271.

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 172464321979 - 2¹ = 172464321977 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (172464321977) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5603482 + ... + 5634175.

It is an arithmetic number, because the mean of its divisors is an integer number (21913433100).

Almost surely, 2^172464321979 is an apocalyptic number.

172464321979 is a deficient number, since it is larger than the sum of its proper divisors (2843142821).

172464321979 is a wasteful number, since it uses less digits than its factorization.

172464321979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11237909.

The product of its digits is 4572288, while the sum is 55.

The spelling of 172464321979 in words is "one hundred seventy-two billion, four hundred sixty-four million, three hundred twenty-one thousand, nine hundred seventy-nine".