38666660904 has 120 divisors (see below), whose sum is σ = 114303280410. Its totient is φ = 12210450624.

The previous prime is 38666660897. The next prime is 38666660917. The reversal of 38666660904 is 40906666683.

It can be written as a sum of positive squares in only one way, i.e., 27060908004 + 11605752900 = 164502^2 + 107730^2 .

It is a super-2 number, since 2×38666660904² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 29 ways as a sum of consecutive naturals, for example, 151282 + ... + 316574.

Almost surely, 2^38666660904 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 38666660904, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (57151640205).

38666660904 is an abundant number, since it is smaller than the sum of its proper divisors (75636619506).

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

38666660904 is a wasteful number, since it uses less digits than its factorization.

38666660904 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165349 (or 165317 counting only the distinct ones).

The product of its (nonzero) digits is 6718464, while the sum is 54.

The spelling of 38666660904 in words is "thirty-eight billion, six hundred sixty-six million, six hundred sixty thousand, nine hundred four".