40431061605 has 64 divisors (see below), whose sum is σ = 71347021056. Its totient is φ = 19549728000.

The previous prime is 40431061603. The next prime is 40431061651. The reversal of 40431061605 is 50616013404.

It is not a de Polignac number, because 40431061605 - 2¹ = 40431061603 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40431061603) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 7923555 + ... + 7928655.

It is an arithmetic number, because the mean of its divisors is an integer number (1114797204).

Almost surely, 2^40431061605 is an apocalyptic number.

It is an amenable number.

40431061605 is a deficient number, since it is larger than the sum of its proper divisors (30915959451).

40431061605 is a wasteful number, since it uses less digits than its factorization.

40431061605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5539 (or 5517 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

The spelling of 40431061605 in words is "forty billion, four hundred thirty-one million, sixty-one thousand, six hundred five".