4638647475520 has 56 divisors (see below), whose sum is σ = 11077611783264. Its totient is φ = 1850111801856.

The previous prime is 4638647475499. The next prime is 4638647475601. The reversal of 4638647475520 is 255747468364.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20776242 + ... + 20998321.

Almost surely, 2^{4638647475520} is an apocalyptic number.

4638647475520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4638647475520 is an abundant number, since it is smaller than the sum of its proper divisors (6438964307744).

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

4638647475520 is a wasteful number, since it uses less digits than its factorization.

4638647475520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41774927 (or 41774917 counting only the distinct ones).

The product of its (nonzero) digits is 135475200, while the sum is 61.

The spelling of 4638647475520 in words is "four trillion, six hundred thirty-eight billion, six hundred forty-seven million, four hundred seventy-five thousand, five hundred twenty".