20354734700851 has 2 divisors, whose sum is σ = 20354734700852. Its totient is φ = 20354734700850.

The previous prime is 20354734700767. The next prime is 20354734700917. The reversal of 20354734700851 is 15800743745302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20354734700851 - 2³⁷ = 20217295747379 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20354734700795 and 20354734700804.

It is not a weakly prime, because it can be changed into another prime (20354734700551) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10177367350425 + 10177367350426.

It is an arithmetic number, because the mean of its divisors is an integer number (10177367350426).

Almost surely, 2^{20354734700851} is an apocalyptic number.

20354734700851 is a deficient number, since it is larger than the sum of its proper divisors (1).

20354734700851 is an equidigital number, since it uses as much as digits as its factorization.

20354734700851 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2822400, while the sum is 49.

The spelling of 20354734700851 in words is "twenty trillion, three hundred fifty-four billion, seven hundred thirty-four million, seven hundred thousand, eight hundred fifty-one".