20116761643674 has 16 divisors (see below), whose sum is σ = 44703914763840. Its totient is φ = 6705587214540.

The previous prime is 20116761643637. The next prime is 20116761643753. The reversal of 20116761643674 is 47634616761102.

20116761643674 is a `hidden beast` number, since 2 + 0 + 1 + 16 + 7 + 616 + 4 + 3 + 6 + 7 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54), and also a Moran number because the ratio is a prime number: 372532623031 = 20116761643674 / (2 + 0 + 1 + 1 + 6 + 7 + 6 + 1 + 6 + 4 + 3 + 6 + 7 + 4).

It is a self number, because there is not a number n which added to its sum of digits gives 20116761643674.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 186266311462 + ... + 186266311569.

It is an arithmetic number, because the mean of its divisors is an integer number (2793994672740).

Almost surely, 2^{20116761643674} is an apocalyptic number.

20116761643674 is an abundant number, since it is smaller than the sum of its proper divisors (24587153120166).

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

20116761643674 is a wasteful number, since it uses less digits than its factorization.

20116761643674 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 372532623042 (or 372532623036 counting only the distinct ones).

The product of its (nonzero) digits is 6096384, while the sum is 54.

The spelling of 20116761643674 in words is "twenty trillion, one hundred sixteen billion, seven hundred sixty-one million, six hundred forty-three thousand, six hundred seventy-four".