20145194232984 has 48 divisors (see below), whose sum is σ = 54562483984320. Its totient is φ = 6714746844480.

The previous prime is 20145194232959. The next prime is 20145194233027. The reversal of 20145194232984 is 48923249154102.

20145194232984 is a `hidden beast` number, since 2 + 0 + 1 + 4 + 519 + 4 + 2 + 32 + 98 + 4 = 666.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 20145194232984.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 5089032 + ... + 8135639.

It is an arithmetic number, because the mean of its divisors is an integer number (1136718416340).

Almost surely, 2^{20145194232984} is an apocalyptic number.

20145194232984 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

20145194232984 is an abundant number, since it is smaller than the sum of its proper divisors (34417289751336).

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

20145194232984 is a wasteful number, since it uses less digits than its factorization.

20145194232984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13245840 (or 13245833 counting only the distinct ones).

The product of its (nonzero) digits is 4976640, while the sum is 54.

The spelling of 20145194232984 in words is "twenty trillion, one hundred forty-five billion, one hundred ninety-four million, two hundred thirty-two thousand, nine hundred eighty-four".