40131765488278 has 16 divisors (see below), whose sum is σ = 62025994833264. Its totient is φ = 19459966914720.

The previous prime is 40131765488261. The next prime is 40131765488279. The reversal of 40131765488278 is 87288456713104.

It is a super-2 number, since 2×40131765488278² (a number of 28 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40131765488279) 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, 883236493 + ... + 883281928.

It is an arithmetic number, because the mean of its divisors is an integer number (3876624677079).

Almost surely, 2^{40131765488278} is an apocalyptic number.

40131765488278 is a deficient number, since it is larger than the sum of its proper divisors (21894229344986).

40131765488278 is a wasteful number, since it uses less digits than its factorization.

40131765488278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1766518767.

The product of its (nonzero) digits is 72253440, while the sum is 64.

The spelling of 40131765488278 in words is "forty trillion, one hundred thirty-one billion, seven hundred sixty-five million, four hundred eighty-eight thousand, two hundred seventy-eight".