38665745520 has 40 divisors (see below), whose sum is σ = 119863811856. Its totient is φ = 10310865408.

The previous prime is 38665745497. The next prime is 38665745527. The reversal of 38665745520 is 2554756683.

It is a tau number, because it is divible by the number of its divisors (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38665745527) 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, 80553397 + ... + 80553876.

Almost surely, 2^38665745520 is an apocalyptic number.

38665745520 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is an amenable number.

38665745520 is an abundant number, since it is smaller than the sum of its proper divisors (81198066336).

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

38665745520 is a wasteful number, since it uses less digits than its factorization.

38665745520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161107289 (or 161107283 counting only the distinct ones).

The product of its (nonzero) digits is 6048000, while the sum is 51.

The spelling of 38665745520 in words is "thirty-eight billion, six hundred sixty-five million, seven hundred forty-five thousand, five hundred twenty".