4040405443531 has 24 divisors (see below), whose sum is σ = 4484066159664. Its totient is φ = 3627368478720.

The previous prime is 4040405443517. The next prime is 4040405443559. The reversal of 4040405443531 is 1353445040404.

It is not a de Polignac number, because 4040405443531 - 2¹⁵ = 4040405410763 is a prime.

It is a super-2 number, since 2×4040405443531² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4040405443231) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 515790 + ... + 2889091.

It is an arithmetic number, because the mean of its divisors is an integer number (186836089986).

Almost surely, 2^{4040405443531} is an apocalyptic number.

4040405443531 is a deficient number, since it is larger than the sum of its proper divisors (443660716133).

4040405443531 is a wasteful number, since it uses less digits than its factorization.

4040405443531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3405039 (or 3405010 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 37.

The spelling of 4040405443531 in words is "four trillion, forty billion, four hundred five million, four hundred forty-three thousand, five hundred thirty-one".