20662607093 has 2 divisors, whose sum is σ = 20662607094. Its totient is φ = 20662607092.

The previous prime is 20662607081. The next prime is 20662607101. The reversal of 20662607093 is 39070626602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18712324849 + 1950282244 = 136793^2 + 44162^2 .

It is a cyclic number.

It is not a de Polignac number, because 20662607093 - 2³⁰ = 19588865269 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20662607093.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20662607033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10331303546 + 10331303547.

It is an arithmetic number, because the mean of its divisors is an integer number (10331303547).

Almost surely, 2^20662607093 is an apocalyptic number.

It is an amenable number.

20662607093 is a deficient number, since it is larger than the sum of its proper divisors (1).

20662607093 is an equidigital number, since it uses as much as digits as its factorization.

20662607093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 163296, while the sum is 41.

The spelling of 20662607093 in words is "twenty billion, six hundred sixty-two million, six hundred seven thousand, ninety-three".