478398639465 has 48 divisors (see below), whose sum is σ = 849098352960. Its totient is φ = 249039100800.

The previous prime is 478398639457. The next prime is 478398639473. The reversal of 478398639465 is 564936893874.

478398639465 is a `hidden beast` number, since 4 + 7 + 83 + 9 + 86 + 3 + 9 + 465 = 666.

It is an interprime number because it is at equal distance from previous prime (478398639457) and next prime (478398639473).

It is not a de Polignac number, because 478398639465 - 2³ = 478398639457 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 478398639393 and 478398639402.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 2722491 + ... + 2892879.

It is an arithmetic number, because the mean of its divisors is an integer number (17689549020).

Almost surely, 2^478398639465 is an apocalyptic number.

478398639465 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

478398639465 is a deficient number, since it is larger than the sum of its proper divisors (370699713495).

478398639465 is a wasteful number, since it uses less digits than its factorization.

478398639465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171894 (or 171891 counting only the distinct ones).

The product of its digits is 940584960, while the sum is 72.

The spelling of 478398639465 in words is "four hundred seventy-eight billion, three hundred ninety-eight million, six hundred thirty-nine thousand, four hundred sixty-five".