617838240467748 has 24 divisors (see below), whose sum is σ = 1446170266340352. Its totient is φ = 205296407977504.

The previous prime is 617838240467743. The next prime is 617838240467803. The reversal of 617838240467748 is 847764042838716.

It is a self number, because there is not a number n which added to its sum of digits gives 617838240467748.

It is not an unprimeable number, because it can be changed into a prime (617838240467743) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81209018340 + ... + 81209025947.

It is an arithmetic number, because the mean of its divisors is an integer number (60257094430848).

Almost surely, 2^{617838240467748} is an apocalyptic number.

It is an amenable number.

617838240467748 is an abundant number, since it is smaller than the sum of its proper divisors (828332025872604).

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

617838240467748 is a wasteful number, since it uses less digits than its factorization.

617838240467748 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 162418044611 (or 162418044609 counting only the distinct ones).

The product of its (nonzero) digits is 2427715584, while the sum is 75.

The spelling of 617838240467748 in words is "six hundred seventeen trillion, eight hundred thirty-eight billion, two hundred forty million, four hundred sixty-seven thousand, seven hundred forty-eight".