40194131172 has 48 divisors (see below), whose sum is σ = 106316468160. Its totient is φ = 11716507008.

The previous prime is 40194131143. The next prime is 40194131177. The reversal of 40194131172 is 27113149104.

It is not an unprimeable number, because it can be changed into a prime (40194131177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6777423 + ... + 6783350.

It is an arithmetic number, because the mean of its divisors is an integer number (2214926420).

Almost surely, 2^40194131172 is an apocalyptic number.

It is an amenable number.

40194131172 is an abundant number, since it is smaller than the sum of its proper divisors (66122336988).

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

40194131172 is a wasteful number, since it uses less digits than its factorization.

40194131172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13560812 (or 13560810 counting only the distinct ones).

The product of its (nonzero) digits is 6048, while the sum is 33.

The spelling of 40194131172 in words is "forty billion, one hundred ninety-four million, one hundred thirty-one thousand, one hundred seventy-two".