20762295691 has 2 divisors, whose sum is σ = 20762295692. Its totient is φ = 20762295690.

The previous prime is 20762295667. The next prime is 20762295713. The reversal of 20762295691 is 19659226702.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20762295691 is a prime.

It is not a weakly prime, because it can be changed into another prime (20762295091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10381147845 + 10381147846.

It is an arithmetic number, because the mean of its divisors is an integer number (10381147846).

Almost surely, 2^20762295691 is an apocalyptic number.

20762295691 is a deficient number, since it is larger than the sum of its proper divisors (1).

20762295691 is an equidigital number, since it uses as much as digits as its factorization.

20762295691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 816480, while the sum is 49.

The spelling of 20762295691 in words is "twenty billion, seven hundred sixty-two million, two hundred ninety-five thousand, six hundred ninety-one".