40417978892 has 12 divisors (see below), whose sum is σ = 71181983040. Its totient is φ = 20080269456.

The previous prime is 40417978891. The next prime is 40417978921. The reversal of 40417978892 is 29887971404.

It is a super-2 number, since 2×40417978892² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40417978891) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32179292 + ... + 32180547.

It is an arithmetic number, because the mean of its divisors is an integer number (5931831920).

Almost surely, 2^40417978892 is an apocalyptic number.

It is an amenable number.

40417978892 is a deficient number, since it is larger than the sum of its proper divisors (30764004148).

40417978892 is a wasteful number, since it uses less digits than its factorization.

40417978892 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64360000 (or 64359998 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 59.

The spelling of 40417978892 in words is "forty billion, four hundred seventeen million, nine hundred seventy-eight thousand, eight hundred ninety-two".