40406357186 has 32 divisors (see below), whose sum is σ = 66530999808. Its totient is φ = 18291715200.

The previous prime is 40406357171. The next prime is 40406357203. The reversal of 40406357186 is 68175360404.

It is a super-2 number, since 2×40406357186² (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 15 ways as a sum of consecutive naturals, for example, 356111 + ... + 455661.

It is an arithmetic number, because the mean of its divisors is an integer number (2079093744).

Almost surely, 2^40406357186 is an apocalyptic number.

40406357186 is a deficient number, since it is larger than the sum of its proper divisors (26124642622).

40406357186 is a wasteful number, since it uses less digits than its factorization.

40406357186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99866.

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 40406357186 in words is "forty billion, four hundred six million, three hundred fifty-seven thousand, one hundred eighty-six".