30638415540 has 48 divisors (see below), whose sum is σ = 86751483840. Its totient is φ = 8078442240.

The previous prime is 30638415517. The next prime is 30638415593. The reversal of 30638415540 is 4551483603.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2863426 + ... + 2874105.

It is an arithmetic number, because the mean of its divisors is an integer number (1807322580).

Almost surely, 2^30638415540 is an apocalyptic number.

30638415540 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

30638415540 is an abundant number, since it is smaller than the sum of its proper divisors (56113068300).

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

30638415540 is a wasteful number, since it uses less digits than its factorization.

30638415540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5737632 (or 5737630 counting only the distinct ones).

The product of its (nonzero) digits is 172800, while the sum is 39.

The spelling of 30638415540 in words is "thirty billion, six hundred thirty-eight million, four hundred fifteen thousand, five hundred forty".