20207468137 has 2 divisors, whose sum is σ = 20207468138. Its totient is φ = 20207468136.

The previous prime is 20207468077. The next prime is 20207468143. The reversal of 20207468137 is 73186470202.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 10438913241 + 9768554896 = 102171^2 + 98836^2 .

It is a cyclic number.

It is not a de Polignac number, because 20207468137 - 2⁷ = 20207468009 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20207468137.

It is not a weakly prime, because it can be changed into another prime (20207468167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10103734068 + 10103734069.

It is an arithmetic number, because the mean of its divisors is an integer number (10103734069).

Almost surely, 2^20207468137 is an apocalyptic number.

It is an amenable number.

20207468137 is a deficient number, since it is larger than the sum of its proper divisors (1).

20207468137 is an equidigital number, since it uses as much as digits as its factorization.

20207468137 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 112896, while the sum is 40.

The spelling of 20207468137 in words is "twenty billion, two hundred seven million, four hundred sixty-eight thousand, one hundred thirty-seven".