40746474778717 has 8 divisors (see below), whose sum is σ = 42931835833760. Its totient is φ = 38565194698800.

The previous prime is 40746474778693. The next prime is 40746474778721. The reversal of 40746474778717 is 71787747464704.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40746474778717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 40746474778717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40746474778117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1020223278 + ... + 1020263215.

It is an arithmetic number, because the mean of its divisors is an integer number (5366479479220).

Almost surely, 2^{40746474778717} is an apocalyptic number.

It is an amenable number.

40746474778717 is a deficient number, since it is larger than the sum of its proper divisors (2185361055043).

40746474778717 is a wasteful number, since it uses less digits than its factorization.

40746474778717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2040487563.

The product of its (nonzero) digits is 1445670912, while the sum is 73.

The spelling of 40746474778717 in words is "forty trillion, seven hundred forty-six billion, four hundred seventy-four million, seven hundred seventy-eight thousand, seven hundred seventeen".