479453997179920 has 80 divisors (see below), whose sum is σ = 1317908031701760. Its totient is φ = 158715805957632.

The previous prime is 479453997179887. The next prime is 479453997179921. The reversal of 479453997179920 is 29971799354974.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×479453997179920² (a number of 30 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (479453997179921) 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, 14761498452 + ... + 14761530931.

It is an arithmetic number, because the mean of its divisors is an integer number (16473850396272).

Almost surely, 2^{479453997179920} is an apocalyptic number.

479453997179920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

479453997179920 is an abundant number, since it is smaller than the sum of its proper divisors (838454034521840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

479453997179920 is a wasteful number, since it uses less digits than its factorization.

479453997179920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29523029432 (or 29523029426 counting only the distinct ones).

The product of its (nonzero) digits is 9721827360, while the sum is 85.

The spelling of 479453997179920 in words is "four hundred seventy-nine trillion, four hundred fifty-three billion, nine hundred ninety-seven million, one hundred seventy-nine thousand, nine hundred twenty".