20034163374561 has 24 divisors (see below), whose sum is σ = 33178611433344. Its totient is φ = 11411282756160.

The previous prime is 20034163374559. The next prime is 20034163374607. The reversal of 20034163374561 is 16547336143002.

20034163374561 is a `hidden beast` number, since 2 + 0 + 0 + 3 + 4 + 1 + 633 + 7 + 4 + 5 + 6 + 1 = 666.

It is not a de Polignac number, because 20034163374561 - 2¹ = 20034163374559 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20034163374061) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 511238596 + ... + 511277781.

It is an arithmetic number, because the mean of its divisors is an integer number (1382442143056).

Almost surely, 2^{20034163374561} is an apocalyptic number.

20034163374561 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

It is an amenable number.

20034163374561 is a deficient number, since it is larger than the sum of its proper divisors (13144448058783).

20034163374561 is a wasteful number, since it uses less digits than its factorization.

20034163374561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1022516701 (or 1022516698 counting only the distinct ones).

The product of its (nonzero) digits is 1088640, while the sum is 45.

The spelling of 20034163374561 in words is "twenty trillion, thirty-four billion, one hundred sixty-three million, three hundred seventy-four thousand, five hundred sixty-one".