40405344536631 has 16 divisors (see below), whose sum is σ = 57215174231808. Its totient is φ = 25275779760000.

The previous prime is 40405344536603. The next prime is 40405344536633. The reversal of 40405344536631 is 13663544350404.

It is not a de Polignac number, because 40405344536631 - 2²⁵ = 40405310982199 is a prime.

It is a super-2 number, since 2×40405344536631² (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 (40405344536633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1196752995 + ... + 1196786756.

It is an arithmetic number, because the mean of its divisors is an integer number (3575948389488).

Almost surely, 2^{40405344536631} is an apocalyptic number.

40405344536631 is a deficient number, since it is larger than the sum of its proper divisors (16809829695177).

40405344536631 is a wasteful number, since it uses less digits than its factorization.

40405344536631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2393540102.

The product of its (nonzero) digits is 6220800, while the sum is 48.

The spelling of 40405344536631 in words is "forty trillion, four hundred five billion, three hundred forty-four million, five hundred thirty-six thousand, six hundred thirty-one".