38899752672 has 48 divisors (see below), whose sum is σ = 111394749312. Its totient is φ = 11787803520.

The previous prime is 38899752659. The next prime is 38899752721. The reversal of 38899752672 is 27625799883.

It is a tau number, because it is divible by the number of its divisors (48).

It is a super-2 number, since 2×38899752672² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (66).

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 7 ways as a sum of consecutive naturals, for example, 18417388 + ... + 18419499.

It is an arithmetic number, because the mean of its divisors is an integer number (2320723944).

Almost surely, 2^38899752672 is an apocalyptic number.

38899752672 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

38899752672 is an abundant number, since it is smaller than the sum of its proper divisors (72494996640).

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

38899752672 is a wasteful number, since it uses less digits than its factorization.

38899752672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36836911 (or 36836903 counting only the distinct ones).

The product of its digits is 91445760, while the sum is 66.

The spelling of 38899752672 in words is "thirty-eight billion, eight hundred ninety-nine million, seven hundred fifty-two thousand, six hundred seventy-two".