20695886093 has 2 divisors, whose sum is σ = 20695886094. Its totient is φ = 20695886092.

The previous prime is 20695886089. The next prime is 20695886131. The reversal of 20695886093 is 39068859602.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11525525449 + 9170360644 = 107357^2 + 95762^2 .

It is a cyclic number.

It is not a de Polignac number, because 20695886093 - 2² = 20695886089 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20695886033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10347943046 + 10347943047.

It is an arithmetic number, because the mean of its divisors is an integer number (10347943047).

Almost surely, 2^20695886093 is an apocalyptic number.

It is an amenable number.

20695886093 is a deficient number, since it is larger than the sum of its proper divisors (1).

20695886093 is an equidigital number, since it uses as much as digits as its factorization.

20695886093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5598720, while the sum is 56.

The spelling of 20695886093 in words is "twenty billion, six hundred ninety-five million, eight hundred eighty-six thousand, ninety-three".