20602023977 has 2 divisors, whose sum is σ = 20602023978. Its totient is φ = 20602023976.

The previous prime is 20602023941. The next prime is 20602024013. The reversal of 20602023977 is 77932020602.

It is a happy number.

It is a balanced prime because it is at equal distance from previous prime (20602023941) and next prime (20602024013).

It can be written as a sum of positive squares in only one way, i.e., 11351623936 + 9250400041 = 106544^2 + 96179^2 .

It is a cyclic number.

It is not a de Polignac number, because 20602023977 - 2¹⁰ = 20602022953 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20602023977.

It is not a weakly prime, because it can be changed into another prime (20602023907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10301011988 + 10301011989.

It is an arithmetic number, because the mean of its divisors is an integer number (10301011989).

Almost surely, 2^20602023977 is an apocalyptic number.

It is an amenable number.

20602023977 is a deficient number, since it is larger than the sum of its proper divisors (1).

20602023977 is an equidigital number, since it uses as much as digits as its factorization.

20602023977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 63504, while the sum is 38.

The spelling of 20602023977 in words is "twenty billion, six hundred two million, twenty-three thousand, nine hundred seventy-seven".