478387408731660 has 72 divisors (see below), whose sum is σ = 1490327621096496. Its totient is φ = 124122138480000.

The previous prime is 478387408731629. The next prime is 478387408731737. The reversal of 478387408731660 is 66137804783874.

478387408731660 is a `hidden beast` number, since 4 + 7 + 8 + 3 + 87 + 408 + 73 + 16 + 60 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 35914963966 + ... + 35914977285.

Almost surely, 2^{478387408731660} is an apocalyptic number.

It is an amenable number.

478387408731660 is an abundant number, since it is smaller than the sum of its proper divisors (1011940212364836).

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

478387408731660 is a wasteful number, since it uses less digits than its factorization.

478387408731660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71829941303 (or 71829941298 counting only the distinct ones).

The product of its (nonzero) digits is 910393344, while the sum is 72.

The spelling of 478387408731660 in words is "four hundred seventy-eight trillion, three hundred eighty-seven billion, four hundred eight million, seven hundred thirty-one thousand, six hundred sixty".