7407998540838 has 48 divisors (see below), whose sum is σ = 18374239353600. Its totient is φ = 2113037482608.

The previous prime is 7407998540801. The next prime is 7407998540933. The reversal of 7407998540838 is 8380458997047.

7407998540838 is a `hidden beast` number, since 7 + 4 + 0 + 79 + 9 + 8 + 540 + 8 + 3 + 8 = 666.

It is a congruent number.

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, 49001020 + ... + 49151967.

It is an arithmetic number, because the mean of its divisors is an integer number (382796653200).

Almost surely, 2^{7407998540838} is an apocalyptic number.

7407998540838 is an abundant number, since it is smaller than the sum of its proper divisors (10966240812762).

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

7407998540838 is a wasteful number, since it uses less digits than its factorization.

7407998540838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98153601 (or 98153598 counting only the distinct ones).

The product of its (nonzero) digits is 487710720, while the sum is 72.

The spelling of 7407998540838 in words is "seven trillion, four hundred seven billion, nine hundred ninety-eight million, five hundred forty thousand, eight hundred thirty-eight".