377779977791 has 2 divisors, whose sum is σ = 377779977792. Its totient is φ = 377779977790.

The previous prime is 377779977781. The next prime is 377779977793. The reversal of 377779977791 is 197779977773.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-377779977791 is a prime.

Together with 377779977793, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (377779977793) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 188889988895 + 188889988896.

It is an arithmetic number, because the mean of its divisors is an integer number (188889988896).

Almost surely, 2^377779977791 is an apocalyptic number.

377779977791 is a deficient number, since it is larger than the sum of its proper divisors (1).

377779977791 is an equidigital number, since it uses as much as digits as its factorization.

377779977791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1801088541, while the sum is 80.

The spelling of 377779977791 in words is "three hundred seventy-seven billion, seven hundred seventy-nine million, nine hundred seventy-seven thousand, seven hundred ninety-one".