20896636751 has 2 divisors, whose sum is σ = 20896636752. Its totient is φ = 20896636750.

The previous prime is 20896636727. The next prime is 20896636763. The reversal of 20896636751 is 15763669802.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20896636751 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 20896636693 and 20896636702.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20896636951) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10448318375 + 10448318376.

It is an arithmetic number, because the mean of its divisors is an integer number (10448318376).

Almost surely, 2^20896636751 is an apocalyptic number.

20896636751 is a deficient number, since it is larger than the sum of its proper divisors (1).

20896636751 is an equidigital number, since it uses as much as digits as its factorization.

20896636751 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3265920, while the sum is 53.

The spelling of 20896636751 in words is "twenty billion, eight hundred ninety-six million, six hundred thirty-six thousand, seven hundred fifty-one".