38947208544 has 144 divisors (see below), whose sum is σ = 112064202432. Its totient is φ = 12829999104.

The previous prime is 38947208533. The next prime is 38947208567. The reversal of 38947208544 is 44580274983.

38947208544 is a `hidden beast` number, since 3 + 8 + 94 + 7 + 2 + 0 + 8 + 544 = 666.

It is a tau number, because it is divible by the number of its divisors (144).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8724457 + ... + 8728919.

It is an arithmetic number, because the mean of its divisors is an integer number (778223628).

Almost surely, 2^38947208544 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 38947208544, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (56032101216).

38947208544 is an abundant number, since it is smaller than the sum of its proper divisors (73116993888).

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

38947208544 is a wasteful number, since it uses less digits than its factorization.

38947208544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4829 (or 4818 counting only the distinct ones).

The product of its (nonzero) digits is 7741440, while the sum is 54.

The spelling of 38947208544 in words is "thirty-eight billion, nine hundred forty-seven million, two hundred eight thousand, five hundred forty-four".