40805759697 has 16 divisors (see below), whose sum is σ = 57961263360. Its totient is φ = 25461549072.

The previous prime is 40805759693. The next prime is 40805759749. The reversal of 40805759697 is 79695750804.

It is not a de Polignac number, because 40805759697 - 2² = 40805759693 is a prime.

It is a super-2 number, since 2×40805759697² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40805759697.

It is not an unprimeable number, because it can be changed into a prime (40805759693) 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, 4307863 + ... + 4317324.

It is an arithmetic number, because the mean of its divisors is an integer number (3622578960).

Almost surely, 2^40805759697 is an apocalyptic number.

It is an amenable number.

40805759697 is a deficient number, since it is larger than the sum of its proper divisors (17155503663).

40805759697 is a wasteful number, since it uses less digits than its factorization.

40805759697 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8625292.

The product of its (nonzero) digits is 19051200, while the sum is 60.

The spelling of 40805759697 in words is "forty billion, eight hundred five million, seven hundred fifty-nine thousand, six hundred ninety-seven".