291381613775068 has 12 divisors (see below), whose sum is σ = 512735049655192. Its totient is φ = 144885885302160.

The previous prime is 291381613775059. The next prime is 291381613775093. The reversal of 291381613775068 is 860577316183192.

It is a junction number, because it is equal to n+sod(n) for n = 291381613774994 and 291381613775012.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 201230395530 + ... + 201230396977.

Almost surely, 2^{291381613775068} is an apocalyptic number.

It is an amenable number.

291381613775068 is a deficient number, since it is larger than the sum of its proper divisors (221353435880124).

291381613775068 is a wasteful number, since it uses less digits than its factorization.

291381613775068 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 402460792692 (or 402460792690 counting only the distinct ones).

The product of its (nonzero) digits is 91445760, while the sum is 67.

The spelling of 291381613775068 in words is "two hundred ninety-one trillion, three hundred eighty-one billion, six hundred thirteen million, seven hundred seventy-five thousand, sixty-eight".