40507338531 has 32 divisors (see below), whose sum is σ = 59560554240. Its totient is φ = 24283670400.

The previous prime is 40507338503. The next prime is 40507338541. The reversal of 40507338531 is 13583370504.

It is not a de Polignac number, because 40507338531 - 2¹⁸ = 40507076387 is a prime.

It is a super-2 number, since 2×40507338531² (a number of 22 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40507338531.

It is not an unprimeable number, because it can be changed into a prime (40507338541) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2195776 + ... + 2214146.

It is an arithmetic number, because the mean of its divisors is an integer number (1861267320).

Almost surely, 2^40507338531 is an apocalyptic number.

40507338531 is a deficient number, since it is larger than the sum of its proper divisors (19053215709).

40507338531 is a wasteful number, since it uses less digits than its factorization.

40507338531 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19107.

The product of its (nonzero) digits is 151200, while the sum is 39.

The spelling of 40507338531 in words is "forty billion, five hundred seven million, three hundred thirty-eight thousand, five hundred thirty-one".