377638979779 has 2 divisors, whose sum is σ = 377638979780. Its totient is φ = 377638979778.

The previous prime is 377638979777. The next prime is 377638979803. The reversal of 377638979779 is 977979836773.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 377638979779 - 2¹ = 377638979777 is a prime.

It is a super-2 number, since 2×377638979779² (a number of 24 digits) contains 22 as substring.

Together with 377638979777, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (377638979777) 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, 188819489889 + 188819489890.

It is an arithmetic number, because the mean of its divisors is an integer number (188819489890).

Almost surely, 2^377638979779 is an apocalyptic number.

377638979779 is a deficient number, since it is larger than the sum of its proper divisors (1).

377638979779 is an equidigital number, since it uses as much as digits as its factorization.

377638979779 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5292994896, while the sum is 82.

The spelling of 377638979779 in words is "three hundred seventy-seven billion, six hundred thirty-eight million, nine hundred seventy-nine thousand, seven hundred seventy-nine".