16044639272891 has 2 divisors, whose sum is σ = 16044639272892. Its totient is φ = 16044639272890.

The previous prime is 16044639272833. The next prime is 16044639272897. The reversal of 16044639272891 is 19827293644061.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16044639272891 - 2³⁴ = 16027459403707 is a prime.

It is not a weakly prime, because it can be changed into another prime (16044639272897) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8022319636445 + 8022319636446.

It is an arithmetic number, because the mean of its divisors is an integer number (8022319636446).

Almost surely, 2^{16044639272891} is an apocalyptic number.

16044639272891 is a deficient number, since it is larger than the sum of its proper divisors (1).

16044639272891 is an equidigital number, since it uses as much as digits as its factorization.

16044639272891 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31352832, while the sum is 62.

The spelling of 16044639272891 in words is "sixteen trillion, forty-four billion, six hundred thirty-nine million, two hundred seventy-two thousand, eight hundred ninety-one".