38409135723 has 12 divisors (see below), whose sum is σ = 63405557488. Its totient is φ = 21948077520.

The previous prime is 38409135703. The next prime is 38409135733. The reversal of 38409135723 is 32753190483.

38409135723 is a `hidden beast` number, since 38 + 40 + 9 + 1 + 3 + 572 + 3 = 666.

It is not a de Polignac number, because 38409135723 - 2¹⁶ = 38409070187 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38409135703) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 304834348 + ... + 304834473.

Almost surely, 2^38409135723 is an apocalyptic number.

38409135723 is a deficient number, since it is larger than the sum of its proper divisors (24996421765).

38409135723 is a wasteful number, since it uses less digits than its factorization.

38409135723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 609668834 (or 609668831 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 45.

The spelling of 38409135723 in words is "thirty-eight billion, four hundred nine million, one hundred thirty-five thousand, seven hundred twenty-three".