40813418831985 has 48 divisors (see below), whose sum is σ = 71893481287680. Its totient is φ = 21414096126720.

The previous prime is 40813418831869. The next prime is 40813418832023. The reversal of 40813418831985 is 58913881431804.

40813418831985 is a `hidden beast` number, since 4 + 0 + 8 + 134 + 188 + 319 + 8 + 5 = 666.

It is not a de Polignac number, because 40813418831985 - 2⁹ = 40813418831473 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 6599665 + ... + 11188494.

It is an arithmetic number, because the mean of its divisors is an integer number (1497780860160).

Almost surely, 2^{40813418831985} is an apocalyptic number.

40813418831985 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40813418831985 is a deficient number, since it is larger than the sum of its proper divisors (31080062455695).

40813418831985 is a wasteful number, since it uses less digits than its factorization.

40813418831985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17788998 (or 17788995 counting only the distinct ones).

The product of its (nonzero) digits is 26542080, while the sum is 63.

The spelling of 40813418831985 in words is "forty trillion, eight hundred thirteen billion, four hundred eighteen million, eight hundred thirty-one thousand, nine hundred eighty-five".