20042362969 has 2 divisors, whose sum is σ = 20042362970. Its totient is φ = 20042362968.

The previous prime is 20042362913. The next prime is 20042362979. The reversal of 20042362969 is 96926324002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 19905823744 + 136539225 = 141088^2 + 11685^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20042362969 is a prime.

It is a super-2 number, since 2×20042362969² (a number of 21 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20042362979) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10021181484 + 10021181485.

It is an arithmetic number, because the mean of its divisors is an integer number (10021181485).

Almost surely, 2^20042362969 is an apocalyptic number.

It is an amenable number.

20042362969 is a deficient number, since it is larger than the sum of its proper divisors (1).

20042362969 is an equidigital number, since it uses as much as digits as its factorization.

20042362969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 279936, while the sum is 43.

The spelling of 20042362969 in words is "twenty billion, forty-two million, three hundred sixty-two thousand, nine hundred sixty-nine".