40831236680721 has 32 divisors (see below), whose sum is σ = 56047220761728. Its totient is φ = 26424912821760.

The previous prime is 40831236680687. The next prime is 40831236680771. The reversal of 40831236680721 is 12708663213804.

It is a happy number.

It is not a de Polignac number, because 40831236680721 - 2⁶ = 40831236680657 is a prime.

It is a super-3 number, since 3×40831236680721³ (a number of 42 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (40831236680771) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 24156570 + ... + 25791516.

It is an arithmetic number, because the mean of its divisors is an integer number (1751475648804).

Almost surely, 2^{40831236680721} is an apocalyptic number.

40831236680721 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

40831236680721 is a deficient number, since it is larger than the sum of its proper divisors (15215984081007).

40831236680721 is a wasteful number, since it uses less digits than its factorization.

40831236680721 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1636001.

The product of its (nonzero) digits is 2322432, while the sum is 51.

The spelling of 40831236680721 in words is "forty trillion, eight hundred thirty-one billion, two hundred thirty-six million, six hundred eighty thousand, seven hundred twenty-one".