20207370187 has 2 divisors, whose sum is σ = 20207370188. Its totient is φ = 20207370186.

The previous prime is 20207370179. The next prime is 20207370193. The reversal of 20207370187 is 78107370202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 20207370187 - 2³ = 20207370179 is a prime.

It is not a weakly prime, because it can be changed into another prime (20207370787) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10103685093 + 10103685094.

It is an arithmetic number, because the mean of its divisors is an integer number (10103685094).

Almost surely, 2^20207370187 is an apocalyptic number.

20207370187 is a deficient number, since it is larger than the sum of its proper divisors (1).

20207370187 is an equidigital number, since it uses as much as digits as its factorization.

20207370187 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 32928, while the sum is 37.

The spelling of 20207370187 in words is "twenty billion, two hundred seven million, three hundred seventy thousand, one hundred eighty-seven".