20772026801 has 2 divisors, whose sum is σ = 20772026802. Its totient is φ = 20772026800.

The previous prime is 20772026753. The next prime is 20772026837. The reversal of 20772026801 is 10862027702.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11799390625 + 8972636176 = 108625^2 + 94724^2 .

It is a cyclic number.

It is not a de Polignac number, because 20772026801 - 2¹⁰ = 20772025777 is a prime.

It is not a weakly prime, because it can be changed into another prime (20772026851) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10386013400 + 10386013401.

It is an arithmetic number, because the mean of its divisors is an integer number (10386013401).

Almost surely, 2^20772026801 is an apocalyptic number.

It is an amenable number.

20772026801 is a deficient number, since it is larger than the sum of its proper divisors (1).

20772026801 is an equidigital number, since it uses as much as digits as its factorization.

20772026801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18816, while the sum is 35.

Subtracting from 20772026801 its reverse (10862027702), we obtain a palindrome (9909999099).

The spelling of 20772026801 in words is "twenty billion, seven hundred seventy-two million, twenty-six thousand, eight hundred one".