38916044691 has 4 divisors (see below), whose sum is σ = 51888059592. Its totient is φ = 25944029792.

The previous prime is 38916044677. The next prime is 38916044707. The reversal of 38916044691 is 19644061983.

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 38916044691 - 2⁹ = 38916044179 is a prime.

It is not an unprimeable number, because it can be changed into a prime (38916044191) 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, 6486007446 + ... + 6486007451.

It is an arithmetic number, because the mean of its divisors is an integer number (12972014898).

Almost surely, 2^38916044691 is an apocalyptic number.

38916044691 is a deficient number, since it is larger than the sum of its proper divisors (12972014901).

38916044691 is a wasteful number, since it uses less digits than its factorization.

38916044691 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12972014900.

The product of its (nonzero) digits is 1119744, while the sum is 51.

The spelling of 38916044691 in words is "thirty-eight billion, nine hundred sixteen million, forty-four thousand, six hundred ninety-one".