20307375097 has 2 divisors, whose sum is σ = 20307375098. Its totient is φ = 20307375096.

The previous prime is 20307375013. The next prime is 20307375163. The reversal of 20307375097 is 79057370302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13616789481 + 6690585616 = 116691^2 + 81796^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20307375097 is a prime.

It is not a weakly prime, because it can be changed into another prime (20307375497) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10153687548 + 10153687549.

It is an arithmetic number, because the mean of its divisors is an integer number (10153687549).

Almost surely, 2^20307375097 is an apocalyptic number.

It is an amenable number.

20307375097 is a deficient number, since it is larger than the sum of its proper divisors (1).

20307375097 is an equidigital number, since it uses as much as digits as its factorization.

20307375097 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 277830, while the sum is 43.

The spelling of 20307375097 in words is "twenty billion, three hundred seven million, three hundred seventy-five thousand, ninety-seven".