20309902735051 has 2 divisors, whose sum is σ = 20309902735052. Its totient is φ = 20309902735050.

The previous prime is 20309902735013. The next prime is 20309902735091. The reversal of 20309902735051 is 15053720990302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20309902735051 - 2⁷ = 20309902734923 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20309902734992 and 20309902735010.

It is not a weakly prime, because it can be changed into another prime (20309902735091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10154951367525 + 10154951367526.

It is an arithmetic number, because the mean of its divisors is an integer number (10154951367526).

Almost surely, 2^{20309902735051} is an apocalyptic number.

20309902735051 is a deficient number, since it is larger than the sum of its proper divisors (1).

20309902735051 is an equidigital number, since it uses as much as digits as its factorization.

20309902735051 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 510300, while the sum is 46.

The spelling of 20309902735051 in words is "twenty trillion, three hundred nine billion, nine hundred two million, seven hundred thirty-five thousand, fifty-one".