38297865564 has 72 divisors (see below), whose sum is σ = 110835204480. Its totient is φ = 10922771232.

The previous prime is 38297865563. The next prime is 38297865569. The reversal of 38297865564 is 46556879283.

It is a happy number.

38297865564 is a `hidden beast` number, since 3 + 8 + 2 + 9 + 7 + 8 + 65 + 564 = 666.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (38297865563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6907 + ... + 276845.

It is an arithmetic number, because the mean of its divisors is an integer number (1539377840).

Almost surely, 2^38297865564 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 38297865564, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (55417602240).

38297865564 is an abundant number, since it is smaller than the sum of its proper divisors (72537338916).

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

38297865564 is a wasteful number, since it uses less digits than its factorization.

38297865564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 270519 (or 270514 counting only the distinct ones).

The product of its digits is 87091200, while the sum is 63.

The spelling of 38297865564 in words is "thirty-eight billion, two hundred ninety-seven million, eight hundred sixty-five thousand, five hundred sixty-four".