20797641023 has 2 divisors, whose sum is σ = 20797641024. Its totient is φ = 20797641022.

The previous prime is 20797641019. The next prime is 20797641037. The reversal of 20797641023 is 32014679702.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20797641023 - 2² = 20797641019 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20797641223) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10398820511 + 10398820512.

It is an arithmetic number, because the mean of its divisors is an integer number (10398820512).

Almost surely, 2^20797641023 is an apocalyptic number.

20797641023 is a deficient number, since it is larger than the sum of its proper divisors (1).

20797641023 is an equidigital number, since it uses as much as digits as its factorization.

20797641023 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 127008, while the sum is 41.

The spelling of 20797641023 in words is "twenty billion, seven hundred ninety-seven million, six hundred forty-one thousand, twenty-three".