40699707613 has 2 divisors, whose sum is σ = 40699707614. Its totient is φ = 40699707612.

The previous prime is 40699707557. The next prime is 40699707619. The reversal of 40699707613 is 31670799604.

40699707613 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30911969124 + 9787738489 = 175818^2 + 98933^2 .

It is a cyclic number.

It is not a de Polignac number, because 40699707613 - 2²¹ = 40697610461 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40699707619) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20349853806 + 20349853807.

It is an arithmetic number, because the mean of its divisors is an integer number (20349853807).

Almost surely, 2^40699707613 is an apocalyptic number.

It is an amenable number.

40699707613 is a deficient number, since it is larger than the sum of its proper divisors (1).

40699707613 is an equidigital number, since it uses as much as digits as its factorization.

40699707613 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1714608, while the sum is 52.

The spelling of 40699707613 in words is "forty billion, six hundred ninety-nine million, seven hundred seven thousand, six hundred thirteen".