478720252397 has 32 divisors (see below), whose sum is σ = 517785246720. Its totient is φ = 441737280000.

The previous prime is 478720252349. The next prime is 478720252403. The reversal of 478720252397 is 793252027874.

It is not a de Polignac number, because 478720252397 - 2¹⁴ = 478720236013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478720222397) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12954647 + ... + 12991547.

It is an arithmetic number, because the mean of its divisors is an integer number (16180788960).

Almost surely, 2^478720252397 is an apocalyptic number.

It is an amenable number.

478720252397 is a deficient number, since it is larger than the sum of its proper divisors (39064994323).

478720252397 is a wasteful number, since it uses less digits than its factorization.

478720252397 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37205.

The product of its (nonzero) digits is 11854080, while the sum is 56.

The spelling of 478720252397 in words is "four hundred seventy-eight billion, seven hundred twenty million, two hundred fifty-two thousand, three hundred ninety-seven".