20601386969 has 2 divisors, whose sum is σ = 20601386970. Its totient is φ = 20601386968.

The previous prime is 20601386957. The next prime is 20601386977. The reversal of 20601386969 is 96968310602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10808305369 + 9793081600 = 103963^2 + 98960^2 .

It is a cyclic number.

It is not a de Polignac number, because 20601386969 - 2²⁰ = 20600338393 is a prime.

It is a super-2 number, since 2×20601386969² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20601386999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10300693484 + 10300693485.

It is an arithmetic number, because the mean of its divisors is an integer number (10300693485).

Almost surely, 2^20601386969 is an apocalyptic number.

It is an amenable number.

20601386969 is a deficient number, since it is larger than the sum of its proper divisors (1).

20601386969 is an equidigital number, since it uses as much as digits as its factorization.

20601386969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 839808, while the sum is 50.

The spelling of 20601386969 in words is "twenty billion, six hundred one million, three hundred eighty-six thousand, nine hundred sixty-nine".