40161864435 has 48 divisors (see below), whose sum is σ = 80722053888. Its totient is φ = 16690639680.

The previous prime is 40161864419. The next prime is 40161864439. The reversal of 40161864435 is 53446816104.

It is not a de Polignac number, because 40161864435 - 2⁴ = 40161864419 is a prime.

It is a super-2 number, since 2×40161864435² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40161864439) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1567849 + ... + 1593258.

It is an arithmetic number, because the mean of its divisors is an integer number (1681709456).

Almost surely, 2^40161864435 is an apocalyptic number.

40161864435 is an abundant number, since it is smaller than the sum of its proper divisors (40560189453).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40161864435 is a wasteful number, since it uses less digits than its factorization.

40161864435 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3161144 (or 3161133 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 42.

The spelling of 40161864435 in words is "forty billion, one hundred sixty-one million, eight hundred sixty-four thousand, four hundred thirty-five".