38550747138921 has 24 divisors (see below), whose sum is σ = 56458809912960. Its totient is φ = 25343886204000.

The previous prime is 38550747138853. The next prime is 38550747138949. The reversal of 38550747138921 is 12983174705583.

It is a happy number.

38550747138921 is a `hidden beast` number, since 3 + 8 + 5 + 507 + 4 + 7 + 1 + 38 + 92 + 1 = 666.

It is not a de Polignac number, because 38550747138921 - 2¹⁷ = 38550747007849 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38550747138221) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32851530 + ... + 34004771.

It is an arithmetic number, because the mean of its divisors is an integer number (2352450413040).

Almost surely, 2^{38550747138921} is an apocalyptic number.

It is an amenable number.

38550747138921 is a deficient number, since it is larger than the sum of its proper divisors (17908062774039).

38550747138921 is a wasteful number, since it uses less digits than its factorization.

38550747138921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 66857197 (or 66857194 counting only the distinct ones).

The product of its (nonzero) digits is 50803200, while the sum is 63.

The spelling of 38550747138921 in words is "thirty-eight trillion, five hundred fifty billion, seven hundred forty-seven million, one hundred thirty-eight thousand, nine hundred twenty-one".