40641186418 has 24 divisors (see below), whose sum is σ = 71184552192. Its totient is φ = 17047050024.

The previous prime is 40641186401. The next prime is 40641186419. The reversal of 40641186418 is 81468114604.

It is not an unprimeable number, because it can be changed into a prime (40641186419) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 626146 + ... + 687997.

It is an arithmetic number, because the mean of its divisors is an integer number (2966023008).

Almost surely, 2^40641186418 is an apocalyptic number.

40641186418 is a deficient number, since it is larger than the sum of its proper divisors (30543365774).

40641186418 is a wasteful number, since it uses less digits than its factorization.

40641186418 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1314246 (or 1314199 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 43.

The spelling of 40641186418 in words is "forty billion, six hundred forty-one million, one hundred eighty-six thousand, four hundred eighteen".