40635698799 has 16 divisors (see below), whose sum is σ = 56896745472. Its totient is φ = 25747564128.

The previous prime is 40635698771. The next prime is 40635698801. The reversal of 40635698799 is 99789653604.

It is a happy number.

It is not a de Polignac number, because 40635698799 - 2⁵ = 40635698767 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40635698749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1864719 + ... + 1886384.

It is an arithmetic number, because the mean of its divisors is an integer number (3556046592).

Almost surely, 2^40635698799 is an apocalyptic number.

40635698799 is a deficient number, since it is larger than the sum of its proper divisors (16261046673).

40635698799 is a wasteful number, since it uses less digits than its factorization.

40635698799 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3751286.

The product of its (nonzero) digits is 88179840, while the sum is 66.

The spelling of 40635698799 in words is "forty billion, six hundred thirty-five million, six hundred ninety-eight thousand, seven hundred ninety-nine".