40938013723685 has 16 divisors (see below), whose sum is σ = 52916984935920. Its totient is φ = 30224020085760.

The previous prime is 40938013723619. The next prime is 40938013723709. The reversal of 40938013723685 is 58632731083904.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 165995945476 + 40772017778209 = 407426^2 + 6385297^2 .

It is a de Polignac number, because none of the positive numbers 2^k-40938013723685 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 73977530 + ... + 74528859.

It is an arithmetic number, because the mean of its divisors is an integer number (3307311558495).

It is a 1-persistent number, because it is pandigital, but 2⋅40938013723685 = 81876027447370 is not.

Almost surely, 2^{40938013723685} is an apocalyptic number.

It is an amenable number.

40938013723685 is a deficient number, since it is larger than the sum of its proper divisors (11978971212235).

40938013723685 is a wasteful number, since it uses less digits than its factorization.

40938013723685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148510648.

The product of its (nonzero) digits is 26127360, while the sum is 59.

The spelling of 40938013723685 in words is "forty trillion, nine hundred thirty-eight billion, thirteen million, seven hundred twenty-three thousand, six hundred eighty-five".