40636316477 has 2 divisors, whose sum is σ = 40636316478. Its totient is φ = 40636316476.

The previous prime is 40636316471. The next prime is 40636316527. The reversal of 40636316477 is 77461363604.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40280088601 + 356227876 = 200699^2 + 18874^2 .

It is a cyclic number.

It is not a de Polignac number, because 40636316477 - 2⁸ = 40636316221 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40636316471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20318158238 + 20318158239.

It is an arithmetic number, because the mean of its divisors is an integer number (20318158239).

Almost surely, 2^40636316477 is an apocalyptic number.

It is an amenable number.

40636316477 is a deficient number, since it is larger than the sum of its proper divisors (1).

40636316477 is an equidigital number, since it uses as much as digits as its factorization.

40636316477 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1524096, while the sum is 47.

The spelling of 40636316477 in words is "forty billion, six hundred thirty-six million, three hundred sixteen thousand, four hundred seventy-seven".