761639231189 has 16 divisors (see below), whose sum is σ = 817326136368. Its totient is φ = 707208364032.

The previous prime is 761639231179. The next prime is 761639231191. The reversal of 761639231189 is 981132936167.

It can be written as a sum of positive squares in 8 ways, for example, as 3999550564 + 757639680625 = 63242^2 + 870425^2 .

It is a cyclic number.

It is not a de Polignac number, because 761639231189 - 2¹² = 761639227093 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (761639231159) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 205784 + ... + 1251249.

It is an arithmetic number, because the mean of its divisors is an integer number (51082883523).

Almost surely, 2^761639231189 is an apocalyptic number.

It is an amenable number.

761639231189 is a deficient number, since it is larger than the sum of its proper divisors (55686905179).

761639231189 is a wasteful number, since it uses less digits than its factorization.

761639231189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1457464.

The product of its digits is 2939328, while the sum is 56.

The spelling of 761639231189 in words is "seven hundred sixty-one billion, six hundred thirty-nine million, two hundred thirty-one thousand, one hundred eighty-nine".