40723096991521 has 16 divisors (see below), whose sum is σ = 47390190615040. Its totient is φ = 34273262687040.

The previous prime is 40723096991509. The next prime is 40723096991539. The reversal of 40723096991521 is 12519969032704.

40723096991521 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 40723096991521 - 2³⁹ = 40173341177633 is a prime.

It is a super-2 number, since 2×40723096991521² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40723096991501) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203326206 + ... + 203526391.

It is an arithmetic number, because the mean of its divisors is an integer number (2961886913440).

Almost surely, 2^{40723096991521} is an apocalyptic number.

It is an amenable number.

40723096991521 is a deficient number, since it is larger than the sum of its proper divisors (6667093623519).

40723096991521 is a wasteful number, since it uses less digits than its factorization.

40723096991521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 406852864.

The product of its (nonzero) digits is 7348320, while the sum is 58.

The spelling of 40723096991521 in words is "forty trillion, seven hundred twenty-three billion, ninety-six million, nine hundred ninety-one thousand, five hundred twenty-one".