40797544185 has 80 divisors (see below), whose sum is σ = 75264152832. Its totient is φ = 21131884800.

The previous prime is 40797544121. The next prime is 40797544217. The reversal of 40797544185 is 58144579704.

40797544185 is a `hidden beast` number, since 4 + 0 + 7 + 97 + 544 + 1 + 8 + 5 = 666.

It is not a de Polignac number, because 40797544185 - 2⁶ = 40797544121 is a prime.

It is a super-2 number, since 2×40797544185² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 2485405 + ... + 2501765.

Almost surely, 2^40797544185 is an apocalyptic number.

40797544185 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40797544185 is a deficient number, since it is larger than the sum of its proper divisors (34466608647).

40797544185 is a wasteful number, since it uses less digits than its factorization.

40797544185 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16556 (or 16547 counting only the distinct ones).

The product of its (nonzero) digits is 5644800, while the sum is 54.

The spelling of 40797544185 in words is "forty billion, seven hundred ninety-seven million, five hundred forty-four thousand, one hundred eighty-five".