38881457736 has 64 divisors (see below), whose sum is σ = 106112160000. Its totient is φ = 11774280000.

The previous prime is 38881457723. The next prime is 38881457759. The reversal of 38881457736 is 63775418883.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 38881457736.

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, 346611 + ... + 444861.

It is an arithmetic number, because the mean of its divisors is an integer number (1658002500).

Almost surely, 2^38881457736 is an apocalyptic number.

It is an amenable number.

38881457736 is an abundant number, since it is smaller than the sum of its proper divisors (67230702264).

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

38881457736 is a wasteful number, since it uses less digits than its factorization.

38881457736 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99770 (or 99766 counting only the distinct ones).

The product of its digits is 27095040, while the sum is 60.

The spelling of 38881457736 in words is "thirty-eight billion, eight hundred eighty-one million, four hundred fifty-seven thousand, seven hundred thirty-six".