40166973888 has 56 divisors (see below), whose sum is σ = 106295269248. Its totient is φ = 13386452736.

The previous prime is 40166973829. The next prime is 40166973929. The reversal of 40166973888 is 88837966104.

It is a Cunningham number, because it is equal to 200417²-1.

It is a super-2 number, since 2×40166973888² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1185795 + ... + 1219197.

It is an arithmetic number, because the mean of its divisors is an integer number (1898129808).

Almost surely, 2^40166973888 is an apocalyptic number.

40166973888 is a gapful number since it is divisible by the number (48) formed by its first and last digit.

It is an amenable number.

40166973888 is an abundant number, since it is smaller than the sum of its proper divisors (66128295360).

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

40166973888 is a wasteful number, since it uses less digits than its factorization.

40166973888 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39681 (or 39671 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 60.

The spelling of 40166973888 in words is "forty billion, one hundred sixty-six million, nine hundred seventy-three thousand, eight hundred eighty-eight".