13772877991 has 2 divisors, whose sum is σ = 13772877992. Its totient is φ = 13772877990.

The previous prime is 13772877961. The next prime is 13772878003. The reversal of 13772877991 is 19977827731.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13772877991 - 2⁵ = 13772877959 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13772877961) by changing a digit.

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 as a sum of consecutive naturals, namely, 6886438995 + 6886438996.

It is an arithmetic number, because the mean of its divisors is an integer number (6886438996).

Almost surely, 2^13772877991 is an apocalyptic number.

13772877991 is a deficient number, since it is larger than the sum of its proper divisors (1).

13772877991 is an equidigital number, since it uses as much as digits as its factorization.

13772877991 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 9335088, while the sum is 61.

The spelling of 13772877991 in words is "thirteen billion, seven hundred seventy-two million, eight hundred seventy-seven thousand, nine hundred ninety-one".