861693333087 has 16 divisors (see below), whose sum is σ = 1151111957760. Its totient is φ = 573369048000.

The previous prime is 861693333013. The next prime is 861693333113. The reversal of 861693333087 is 780333396168.

It is a happy number.

It is not a de Polignac number, because 861693333087 - 2²⁰ = 861692284511 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (861693331087) 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, 6003712 + ... + 6145562.

It is an arithmetic number, because the mean of its divisors is an integer number (71944497360).

Almost surely, 2^861693333087 is an apocalyptic number.

861693333087 is a deficient number, since it is larger than the sum of its proper divisors (289418624673).

861693333087 is a wasteful number, since it uses less digits than its factorization.

861693333087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145694.

The product of its (nonzero) digits is 11757312, while the sum is 57.

The spelling of 861693333087 in words is "eight hundred sixty-one billion, six hundred ninety-three million, three hundred thirty-three thousand, eighty-seven".