20266615001 has 2 divisors, whose sum is σ = 20266615002. Its totient is φ = 20266615000.

The previous prime is 20266614967. The next prime is 20266615007. The reversal of 20266615001 is 10051666202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13184550976 + 7082064025 = 114824^2 + 84155^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20266615001 is a prime.

It is not a weakly prime, because it can be changed into another prime (20266615007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10133307500 + 10133307501.

It is an arithmetic number, because the mean of its divisors is an integer number (10133307501).

Almost surely, 2^20266615001 is an apocalyptic number.

It is an amenable number.

20266615001 is a deficient number, since it is larger than the sum of its proper divisors (1).

20266615001 is an equidigital number, since it uses as much as digits as its factorization.

20266615001 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4320, while the sum is 29.

The spelling of 20266615001 in words is "twenty billion, two hundred sixty-six million, six hundred fifteen thousand, one".