40402790128879 has 8 divisors (see below), whose sum is σ = 41777155542528. Its totient is φ = 39032865315480.

The previous prime is 40402790128873. The next prime is 40402790128913. The reversal of 40402790128879 is 97882109720404.

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

It is a cyclic number.

It is not a de Polignac number, because 40402790128879 - 2⁷ = 40402790128751 is a prime.

It is a super-2 number, since 2×40402790128879² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40402790128873) 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, 1110131557 + ... + 1110167950.

It is an arithmetic number, because the mean of its divisors is an integer number (5222144442816).

Almost surely, 2^{40402790128879} is an apocalyptic number.

40402790128879 is a deficient number, since it is larger than the sum of its proper divisors (1374365413649).

40402790128879 is a wasteful number, since it uses less digits than its factorization.

40402790128879 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2220300125.

The product of its (nonzero) digits is 16257024, while the sum is 61.

The spelling of 40402790128879 in words is "forty trillion, four hundred two billion, seven hundred ninety million, one hundred twenty-eight thousand, eight hundred seventy-nine".