38721723794 has 12 divisors (see below), whose sum is σ = 62894161386. Its totient is φ = 17871564672.

The previous prime is 38721723779. The next prime is 38721723827. The reversal of 38721723794 is 49732712783.

It can be written as a sum of positive squares in 3 ways, for example, as 30190800025 + 8530923769 = 173755^2 + 92363^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 57280319 + ... + 57280994.

Almost surely, 2^38721723794 is an apocalyptic number.

38721723794 is a deficient number, since it is larger than the sum of its proper divisors (24172437592).

38721723794 is a wasteful number, since it uses less digits than its factorization.

38721723794 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114561341 (or 114561328 counting only the distinct ones).

The product of its digits is 3556224, while the sum is 53.

The spelling of 38721723794 in words is "thirty-eight billion, seven hundred twenty-one million, seven hundred twenty-three thousand, seven hundred ninety-four".