40166273584778 has 16 divisors (see below), whose sum is σ = 65729148028704. Its totient is φ = 18256697493360.

The previous prime is 40166273584747. The next prime is 40166273584847. The reversal of 40166273584778 is 87748537266104.

It is a super-2 number, since 2×40166273584778² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34392125 + ... + 35540832.

It is an arithmetic number, because the mean of its divisors is an integer number (4108071751794).

Almost surely, 2^{40166273584778} is an apocalyptic number.

40166273584778 is a deficient number, since it is larger than the sum of its proper divisors (25562874443926).

40166273584778 is a wasteful number, since it uses less digits than its factorization.

40166273584778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69959077.

The product of its (nonzero) digits is 379330560, while the sum is 68.

The spelling of 40166273584778 in words is "forty trillion, one hundred sixty-six billion, two hundred seventy-three million, five hundred eighty-four thousand, seven hundred seventy-eight".