40531031545 has 48 divisors (see below), whose sum is σ = 51624518400. Its totient is φ = 30528161280.

The previous prime is 40531031539. The next prime is 40531031581. The reversal of 40531031545 is 54513013504.

It is not a de Polignac number, because 40531031545 - 2³ = 40531031537 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 39009136 + ... + 39010174.

It is an arithmetic number, because the mean of its divisors is an integer number (1075510800).

Almost surely, 2^40531031545 is an apocalyptic number.

It is an amenable number.

40531031545 is a deficient number, since it is larger than the sum of its proper divisors (11093486855).

40531031545 is a wasteful number, since it uses less digits than its factorization.

40531031545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1298 (or 1261 counting only the distinct ones).

The product of its (nonzero) digits is 18000, while the sum is 31.

The spelling of 40531031545 in words is "forty billion, five hundred thirty-one million, thirty-one thousand, five hundred forty-five".