20754115618845 has 32 divisors (see below), whose sum is σ = 38029611294720. Its totient is φ = 9467788599360.

The previous prime is 20754115618829. The next prime is 20754115618877. The reversal of 20754115618845 is 54881651145702.

It is not a de Polignac number, because 20754115618845 - 2⁴ = 20754115618829 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 206273551 + ... + 206374140.

It is an arithmetic number, because the mean of its divisors is an integer number (1188425352960).

Almost surely, 2^{20754115618845} is an apocalyptic number.

It is an amenable number.

20754115618845 is a deficient number, since it is larger than the sum of its proper divisors (17275495675875).

20754115618845 is a wasteful number, since it uses less digits than its factorization.

20754115618845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412648185.

The product of its (nonzero) digits is 10752000, while the sum is 57.

The spelling of 20754115618845 in words is "twenty trillion, seven hundred fifty-four billion, one hundred fifteen million, six hundred eighteen thousand, eight hundred forty-five".