207137291789 has 16 divisors (see below), whose sum is σ = 210368660400. Its totient is φ = 203927099904.

The previous prime is 207137291773. The next prime is 207137291791. The reversal of 207137291789 is 987192731702.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 7966990564 + 199170301225 = 89258^2 + 446285^2 .

It is a cyclic number.

It is not a de Polignac number, because 207137291789 - 2⁴ = 207137291773 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (207137291729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 58894259 + ... + 58897775.

It is an arithmetic number, because the mean of its divisors is an integer number (13148041275).

Almost surely, 2^207137291789 is an apocalyptic number.

It is an amenable number.

207137291789 is a deficient number, since it is larger than the sum of its proper divisors (3231368611).

207137291789 is a wasteful number, since it uses less digits than its factorization.

207137291789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6272.

The product of its (nonzero) digits is 2667168, while the sum is 56.

The spelling of 207137291789 in words is "two hundred seven billion, one hundred thirty-seven million, two hundred ninety-one thousand, seven hundred eighty-nine".