38664812443520 has 64 divisors (see below), whose sum is σ = 93948363527040. Its totient is φ = 15212385208320.

The previous prime is 38664812443501. The next prime is 38664812443583. The reversal of 38664812443520 is 2534421846683.

It is a tau number, because it is divible by the number of its divisors (64).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 495155792 + ... + 495233871.

It is an arithmetic number, because the mean of its divisors is an integer number (1467943180110).

Almost surely, 2^{38664812443520} is an apocalyptic number.

It is an amenable number.

38664812443520 is an abundant number, since it is smaller than the sum of its proper divisors (55283551083520).

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

38664812443520 is an equidigital number, since it uses as much as digits as its factorization.

38664812443520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 990389743 (or 990389731 counting only the distinct ones).

The product of its (nonzero) digits is 26542080, while the sum is 56.

The spelling of 38664812443520 in words is "thirty-eight trillion, six hundred sixty-four billion, eight hundred twelve million, four hundred forty-three thousand, five hundred twenty".