38405611660 has 36 divisors (see below), whose sum is σ = 87333005088. Its totient is φ = 14180532288.

The previous prime is 38405611619. The next prime is 38405611661. The reversal of 38405611660 is 6611650483.

It is not an unprimeable number, because it can be changed into a prime (38405611661) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5677924 + ... + 5684683.

It is an arithmetic number, because the mean of its divisors is an integer number (2425916808).

Almost surely, 2^38405611660 is an apocalyptic number.

It is an amenable number.

38405611660 is an abundant number, since it is smaller than the sum of its proper divisors (48927393428).

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

38405611660 is a wasteful number, since it uses less digits than its factorization.

38405611660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11362642 (or 11362627 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 40.

The spelling of 38405611660 in words is "thirty-eight billion, four hundred five million, six hundred eleven thousand, six hundred sixty".