20808740006754 has 16 divisors (see below), whose sum is σ = 47562834301248. Its totient is φ = 5945354287632.

The previous prime is 20808740006749. The next prime is 20808740006783. The reversal of 20808740006754 is 45760004780802.

It is a junction number, because it is equal to n+sod(n) for n = 20808740006697 and 20808740006706.

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, 247723095277 + ... + 247723095360.

It is an arithmetic number, because the mean of its divisors is an integer number (2972677143828).

Almost surely, 2^{20808740006754} is an apocalyptic number.

20808740006754 is an abundant number, since it is smaller than the sum of its proper divisors (26754094294494).

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

20808740006754 is a wasteful number, since it uses less digits than its factorization.

20808740006754 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 495446190649.

The product of its (nonzero) digits is 3010560, while the sum is 51.

The spelling of 20808740006754 in words is "twenty trillion, eight hundred eight billion, seven hundred forty million, six thousand, seven hundred fifty-four".