40145055186 has 16 divisors (see below), whose sum is σ = 83780985024. Its totient is φ = 12799872624.

The previous prime is 40145055143. The next prime is 40145055191. The reversal of 40145055186 is 68155054104.

It is a super-2 number, since 2×40145055186² (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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 145452961 + ... + 145453236.

It is an arithmetic number, because the mean of its divisors is an integer number (5236311564).

Almost surely, 2^40145055186 is an apocalyptic number.

40145055186 is a gapful number since it is divisible by the number (46) formed by its first and last digit.

40145055186 is an abundant number, since it is smaller than the sum of its proper divisors (43635929838).

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

40145055186 is a wasteful number, since it uses less digits than its factorization.

40145055186 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 290906225.

The product of its (nonzero) digits is 96000, while the sum is 39.

The spelling of 40145055186 in words is "forty billion, one hundred forty-five million, fifty-five thousand, one hundred eighty-six".