291415561139 has 16 divisors (see below), whose sum is σ = 306567025248. Its totient is φ = 276660582912.

The previous prime is 291415561111. The next prime is 291415561153. The reversal of 291415561139 is 931165514192.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-291415561139 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 291415561093 and 291415561102.

It is not an unprimeable number, because it can be changed into a prime (291415569139) 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, 1460669 + ... + 1648145.

It is an arithmetic number, because the mean of its divisors is an integer number (19160439078).

Almost surely, 2^291415561139 is an apocalyptic number.

291415561139 is a deficient number, since it is larger than the sum of its proper divisors (15151464109).

291415561139 is a wasteful number, since it uses less digits than its factorization.

291415561139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188534.

The product of its digits is 291600, while the sum is 47.

The spelling of 291415561139 in words is "two hundred ninety-one billion, four hundred fifteen million, five hundred sixty-one thousand, one hundred thirty-nine".