40540326531 has 4 divisors (see below), whose sum is σ = 54053768712. Its totient is φ = 27026884352.

The previous prime is 40540326529. The next prime is 40540326557. The reversal of 40540326531 is 13562304504.

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

It is a cyclic number.

It is not a de Polignac number, because 40540326531 - 2¹ = 40540326529 is a prime.

It is a super-2 number, since 2×40540326531² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40540326492 and 40540326501.

It is not an unprimeable number, because it can be changed into a prime (40540326511) 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, 6756721086 + ... + 6756721091.

It is an arithmetic number, because the mean of its divisors is an integer number (13513442178).

Almost surely, 2^40540326531 is an apocalyptic number.

40540326531 is a deficient number, since it is larger than the sum of its proper divisors (13513442181).

40540326531 is a wasteful number, since it uses less digits than its factorization.

40540326531 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13513442180.

The product of its (nonzero) digits is 43200, while the sum is 33.

The spelling of 40540326531 in words is "forty billion, five hundred forty million, three hundred twenty-six thousand, five hundred thirty-one".