40137204400723 has 4 divisors (see below), whose sum is σ = 40138794837040. Its totient is φ = 40135613964408.

The previous prime is 40137204400693. The next prime is 40137204400747. The reversal of 40137204400723 is 32700440273104.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40137204400723 is a prime.

It is a super-2 number, since 2×40137204400723² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40137204407723) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 795180303 + ... + 795230776.

It is an arithmetic number, because the mean of its divisors is an integer number (10034698709260).

Almost surely, 2^{40137204400723} is an apocalyptic number.

40137204400723 is a deficient number, since it is larger than the sum of its proper divisors (1590436317).

40137204400723 is a wasteful number, since it uses less digits than its factorization.

40137204400723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1590436316.

The product of its (nonzero) digits is 112896, while the sum is 37.

Adding to 40137204400723 its reverse (32700440273104), we get a palindrome (72837644673827).

The spelling of 40137204400723 in words is "forty trillion, one hundred thirty-seven billion, two hundred four million, four hundred thousand, seven hundred twenty-three".