38871209516779 has 4 divisors (see below), whose sum is σ = 38871284951776. Its totient is φ = 38871134081784.

The previous prime is 38871209516773. The next prime is 38871209516819. The reversal of 38871209516779 is 97761590217883.

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 38871209516779 - 2⁷ = 38871209516651 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (38871209516773) 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, 36939204 + ... + 37976929.

It is an arithmetic number, because the mean of its divisors is an integer number (9717821237944).

Almost surely, 2^{38871209516779} is an apocalyptic number.

38871209516779 is a deficient number, since it is larger than the sum of its proper divisors (75434997).

38871209516779 is an equidigital number, since it uses as much as digits as its factorization.

38871209516779 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 75434996.

The product of its (nonzero) digits is 320060160, while the sum is 73.

The spelling of 38871209516779 in words is "thirty-eight trillion, eight hundred seventy-one billion, two hundred nine million, five hundred sixteen thousand, seven hundred seventy-nine".