291342253591 has 16 divisors (see below), whose sum is σ = 315288961920. Its totient is φ = 268161187840.

The previous prime is 291342253571. The next prime is 291342253619. The reversal of 291342253591 is 195352243192.

It is not a de Polignac number, because 291342253591 - 2¹⁵ = 291342220823 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 (291342253511) 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 in 15 ways as a sum of consecutive naturals, for example, 888471 + ... + 1171351.

It is an arithmetic number, because the mean of its divisors is an integer number (19705560120).

Almost surely, 2^291342253591 is an apocalyptic number.

291342253591 is a deficient number, since it is larger than the sum of its proper divisors (23946708329).

291342253591 is a wasteful number, since it uses less digits than its factorization.

291342253591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 284234.

The product of its digits is 583200, while the sum is 46.

The spelling of 291342253591 in words is "two hundred ninety-one billion, three hundred forty-two million, two hundred fifty-three thousand, five hundred ninety-one".