40817264777 has 2 divisors, whose sum is σ = 40817264778. Its totient is φ = 40817264776.

The previous prime is 40817264759. The next prime is 40817264797. The reversal of 40817264777 is 77746271804.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30654407056 + 10162857721 = 175084^2 + 100811^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40817264777 is a prime.

It is not a weakly prime, because it can be changed into another prime (40817264737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20408632388 + 20408632389.

It is an arithmetic number, because the mean of its divisors is an integer number (20408632389).

Almost surely, 2^40817264777 is an apocalyptic number.

It is an amenable number.

40817264777 is a deficient number, since it is larger than the sum of its proper divisors (1).

40817264777 is an equidigital number, since it uses as much as digits as its factorization.

40817264777 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3687936, while the sum is 53.

The spelling of 40817264777 in words is "forty billion, eight hundred seventeen million, two hundred sixty-four thousand, seven hundred seventy-seven".