40183657920 has 168 divisors, whose sum is σ = 157960125024. Its totient is φ = 9184831488.

The previous prime is 40183657919. The next prime is 40183657993. The reversal of 40183657920 is 2975638104.

40183657920 is a `hidden beast` number, since 40 + 1 + 8 + 36 + 579 + 2 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (168).

It is a super-2 number, since 2×40183657920² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 976459 + ... + 1016778.

It is a 1-persistent number, because it is pandigital, but 2⋅40183657920 = 80367315840 is not.

Almost surely, 2^40183657920 is an apocalyptic number.

40183657920 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40183657920 is an abundant number, since it is smaller than the sum of its proper divisors (117776467104).

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

40183657920 is a wasteful number, since it uses less digits than its factorization.

40183657920 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1993267 (or 1993254 counting only the distinct ones).

The product of its (nonzero) digits is 362880, while the sum is 45.

The spelling of 40183657920 in words is "forty billion, one hundred eighty-three million, six hundred fifty-seven thousand, nine hundred twenty".