40855406797699 has 4 divisors (see below), whose sum is σ = 43998130397536. Its totient is φ = 37712683197864.

The previous prime is 40855406797691. The next prime is 40855406797781. The reversal of 40855406797699 is 99679760455804.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 40855406797699 - 2³ = 40855406797691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40855406797691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1571361799899 + ... + 1571361799924.

It is an arithmetic number, because the mean of its divisors is an integer number (10999532599384).

Almost surely, 2^{40855406797699} is an apocalyptic number.

40855406797699 is a deficient number, since it is larger than the sum of its proper divisors (3142723599837).

40855406797699 is a wasteful number, since it uses less digits than its factorization.

40855406797699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3142723599836.

The product of its (nonzero) digits is 4115059200, while the sum is 79.

The spelling of 40855406797699 in words is "forty trillion, eight hundred fifty-five billion, four hundred six million, seven hundred ninety-seven thousand, six hundred ninety-nine".