38728079251 has 4 divisors (see below), whose sum is σ = 38733608592. Its totient is φ = 38722549912.

The previous prime is 38728079237. The next prime is 38728079263. The reversal of 38728079251 is 15297082783.

38728079251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 38728079251 - 2¹⁷ = 38727948179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38728079231) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2754151 + ... + 2768176.

It is an arithmetic number, because the mean of its divisors is an integer number (9683402148).

Almost surely, 2^38728079251 is an apocalyptic number.

38728079251 is a deficient number, since it is larger than the sum of its proper divisors (5529341).

38728079251 is an equidigital number, since it uses as much as digits as its factorization.

38728079251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5529340.

The product of its (nonzero) digits is 1693440, while the sum is 52.

The spelling of 38728079251 in words is "thirty-eight billion, seven hundred twenty-eight million, seventy-nine thousand, two hundred fifty-one".