20012195807 has 2 divisors, whose sum is σ = 20012195808. Its totient is φ = 20012195806.

The previous prime is 20012195773. The next prime is 20012195839. The reversal of 20012195807 is 70859121002.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20012195807 - 2³⁰ = 18938453983 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20012195887) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10006097903 + 10006097904.

It is an arithmetic number, because the mean of its divisors is an integer number (10006097904).

Almost surely, 2^20012195807 is an apocalyptic number.

20012195807 is a deficient number, since it is larger than the sum of its proper divisors (1).

20012195807 is an equidigital number, since it uses as much as digits as its factorization.

20012195807 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10080, while the sum is 35.

The spelling of 20012195807 in words is "twenty billion, twelve million, one hundred ninety-five thousand, eight hundred seven".