40899474918 has 192 divisors, whose sum is σ = 96110426880. Its totient is φ = 12548929536.

The previous prime is 40899474893. The next prime is 40899474919. The reversal of 40899474918 is 81947499804.

It is a happy number.

It is a super-2 number, since 2×40899474918² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40899474919) 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 95 ways as a sum of consecutive naturals, for example, 147651396 + ... + 147651672.

It is an arithmetic number, because the mean of its divisors is an integer number (500575140).

Almost surely, 2^40899474918 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 40899474918, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (48055213440).

40899474918 is an abundant number, since it is smaller than the sum of its proper divisors (55210951962).

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

40899474918 is a wasteful number, since it uses less digits than its factorization.

40899474918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 511 (or 508 counting only the distinct ones).

The product of its (nonzero) digits is 20901888, while the sum is 63.

The spelling of 40899474918 in words is "forty billion, eight hundred ninety-nine million, four hundred seventy-four thousand, nine hundred eighteen".