478833621455 has 16 divisors (see below), whose sum is σ = 695314704960. Its totient is φ = 309028756992.

The previous prime is 478833621449. The next prime is 478833621457. The reversal of 478833621455 is 554126338874.

It is not a de Polignac number, because 478833621455 - 2⁸ = 478833621199 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 478833621455.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (478833621457) 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, 402380600 + ... + 402381789.

It is an arithmetic number, because the mean of its divisors is an integer number (43457169060).

Almost surely, 2^478833621455 is an apocalyptic number.

478833621455 is a deficient number, since it is larger than the sum of its proper divisors (216481083505).

478833621455 is a wasteful number, since it uses less digits than its factorization.

478833621455 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804762418.

The product of its digits is 19353600, while the sum is 56.

The spelling of 478833621455 in words is "four hundred seventy-eight billion, eight hundred thirty-three million, six hundred twenty-one thousand, four hundred fifty-five".