40406357185 has 8 divisors (see below), whose sum is σ = 48488708160. Its totient is φ = 32324366064.

The previous prime is 40406357171. The next prime is 40406357203. The reversal of 40406357185 is 58175360404.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 40406357185 - 2²¹ = 40404260033 is a prime.

It is a super-2 number, since 2×40406357185² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 386004 + ... + 479386.

It is an arithmetic number, because the mean of its divisors is an integer number (6061088520).

Almost surely, 2^40406357185 is an apocalyptic number.

It is an amenable number.

40406357185 is a deficient number, since it is larger than the sum of its proper divisors (8082350975).

40406357185 is an equidigital number, since it uses as much as digits as its factorization.

40406357185 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179927.

The product of its (nonzero) digits is 403200, while the sum is 43.

The spelling of 40406357185 in words is "forty billion, four hundred six million, three hundred fifty-seven thousand, one hundred eighty-five".