20604100771 has 2 divisors, whose sum is σ = 20604100772. Its totient is φ = 20604100770.

The previous prime is 20604100709. The next prime is 20604100789. The reversal of 20604100771 is 17700140602.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20604100771 - 2²⁹ = 20067229859 is a prime.

It is not a weakly prime, because it can be changed into another prime (20604100471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10302050385 + 10302050386.

It is an arithmetic number, because the mean of its divisors is an integer number (10302050386).

Almost surely, 2^20604100771 is an apocalyptic number.

20604100771 is a deficient number, since it is larger than the sum of its proper divisors (1).

20604100771 is an equidigital number, since it uses as much as digits as its factorization.

20604100771 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2352, while the sum is 28.

The spelling of 20604100771 in words is "twenty billion, six hundred four million, one hundred thousand, seven hundred seventy-one".