40181752512 has 112 divisors (see below), whose sum is σ = 128865782400. Its totient is φ = 12176282880.

The previous prime is 40181752451. The next prime is 40181752529. The reversal of 40181752512 is 21525718104.

It is a happy number.

40181752512 is a `hidden beast` number, since 40 + 1 + 81 + 7 + 525 + 12 = 666.

It is a super-2 number, since 2×40181752512² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1037962 + ... + 1075977.

Almost surely, 2^40181752512 is an apocalyptic number.

It is an amenable number.

40181752512 is an abundant number, since it is smaller than the sum of its proper divisors (88684029888).

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

40181752512 is a wasteful number, since it uses less digits than its factorization.

40181752512 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2113971 (or 2113955 counting only the distinct ones).

The product of its (nonzero) digits is 22400, while the sum is 36.

The spelling of 40181752512 in words is "forty billion, one hundred eighty-one million, seven hundred fifty-two thousand, five hundred twelve".