478457345531 has 16 divisors (see below), whose sum is σ = 524716281600. Its totient is φ = 432660048480.

The previous prime is 478457345521. The next prime is 478457345557. The reversal of 478457345531 is 135543754874.

It is not a de Polignac number, because 478457345531 - 2⁶ = 478457345467 is a prime.

It is a super-2 number, since 2×478457345531² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (478457345521) 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, 8787965 + ... + 8842241.

It is an arithmetic number, because the mean of its divisors is an integer number (32794767600).

Almost surely, 2^478457345531 is an apocalyptic number.

478457345531 is a deficient number, since it is larger than the sum of its proper divisors (46258936069).

478457345531 is a wasteful number, since it uses less digits than its factorization.

478457345531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58514.

The product of its digits is 28224000, while the sum is 56.

The spelling of 478457345531 in words is "four hundred seventy-eight billion, four hundred fifty-seven million, three hundred forty-five thousand, five hundred thirty-one".