40405075172 has 48 divisors (see below), whose sum is σ = 88800098688. Its totient is φ = 15627313920.

The previous prime is 40405075171. The next prime is 40405075187. The reversal of 40405075172 is 27157050404.

It is not an unprimeable number, because it can be changed into a prime (40405075171) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 436583 + ... + 520974.

It is an arithmetic number, because the mean of its divisors is an integer number (1850002056).

Almost surely, 2^40405075172 is an apocalyptic number.

It is an amenable number.

40405075172 is an abundant number, since it is smaller than the sum of its proper divisors (48395023516).

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

40405075172 is a wasteful number, since it uses less digits than its factorization.

40405075172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 957716 (or 957714 counting only the distinct ones).

The product of its (nonzero) digits is 39200, while the sum is 35.

The spelling of 40405075172 in words is "forty billion, four hundred five million, seventy-five thousand, one hundred seventy-two".