38394816672 has 48 divisors (see below), whose sum is σ = 101204655552. Its totient is φ = 12745159680.

The previous prime is 38394816653. The next prime is 38394816701. The reversal of 38394816672 is 27661849383.

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

It is a super-3 number, since 3×38394816672³ (a number of 33 digits) contains 333 as substring.

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, 806628 + ... + 852899.

It is an arithmetic number, because the mean of its divisors is an integer number (2108430324).

Almost surely, 2^38394816672 is an apocalyptic number.

38394816672 is a gapful number since it is divisible by the number (32) formed by its first and last digit.

It is an amenable number.

38394816672 is an abundant number, since it is smaller than the sum of its proper divisors (62809838880).

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

38394816672 is a wasteful number, since it uses less digits than its factorization.

38394816672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1659781 (or 1659773 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 57.

The spelling of 38394816672 in words is "thirty-eight billion, three hundred ninety-four million, eight hundred sixteen thousand, six hundred seventy-two".