4638731345440 has 24 divisors (see below), whose sum is σ = 10959002803980. Its totient is φ = 1855492538112.

The previous prime is 4638731345377. The next prime is 4638731345459. The reversal of 4638731345440 is 445431378364.

It can be written as a sum of positive squares in 2 ways, for example, as 4360061381776 + 278669963664 = 2088076^2 + 527892^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14496035295 + ... + 14496035614.

Almost surely, 2^{4638731345440} is an apocalyptic number.

4638731345440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4638731345440 is an abundant number, since it is smaller than the sum of its proper divisors (6320271458540).

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

4638731345440 is a wasteful number, since it uses less digits than its factorization.

4638731345440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28992070924 (or 28992070916 counting only the distinct ones).

The product of its (nonzero) digits is 11612160, while the sum is 52.

The spelling of 4638731345440 in words is "four trillion, six hundred thirty-eight billion, seven hundred thirty-one million, three hundred forty-five thousand, four hundred forty".