40686607695 has 32 divisors (see below), whose sum is σ = 68545428480. Its totient is φ = 20551259520.

The previous prime is 40686607691. The next prime is 40686607699. The reversal of 40686607695 is 59670668604.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40686607691) and next prime (40686607699).

It is not a de Polignac number, because 40686607695 - 2² = 40686607691 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40686607691) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1015177 + ... + 1054493.

It is an arithmetic number, because the mean of its divisors is an integer number (2142044640).

Almost surely, 2^40686607695 is an apocalyptic number.

40686607695 is a deficient number, since it is larger than the sum of its proper divisors (27858820785).

40686607695 is a wasteful number, since it uses less digits than its factorization.

40686607695 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42975.

The product of its (nonzero) digits is 13063680, while the sum is 57.

The spelling of 40686607695 in words is "forty billion, six hundred eighty-six million, six hundred seven thousand, six hundred ninety-five".