4777777777631 has 2 divisors, whose sum is σ = 4777777777632. Its totient is φ = 4777777777630.

The previous prime is 4777777777579. The next prime is 4777777777649. The reversal of 4777777777631 is 1367777777774.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4777777777631 is a prime.

It is a super-2 number, since 2×4777777777631² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4777777774631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2388888888815 + 2388888888816.

It is an arithmetic number, because the mean of its divisors is an integer number (2388888888816).

Almost surely, 2^{4777777777631} is an apocalyptic number.

4777777777631 is a deficient number, since it is larger than the sum of its proper divisors (1).

4777777777631 is an equidigital number, since it uses as much as digits as its factorization.

4777777777631 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2905459704, while the sum is 77.

The spelling of 4777777777631 in words is "four trillion, seven hundred seventy-seven billion, seven hundred seventy-seven million, seven hundred seventy-seven thousand, six hundred thirty-one".