291616492345 has 16 divisors (see below), whose sum is σ = 354261600000. Its totient is φ = 230413665664.

The previous prime is 291616492339. The next prime is 291616492351. The reversal of 291616492345 is 543294616192.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (291616492339) and next prime (291616492351).

It is a cyclic number.

It is not a de Polignac number, because 291616492345 - 2⁹ = 291616491833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 291616492292 and 291616492301.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1310781 + ... + 1517029.

It is an arithmetic number, because the mean of its divisors is an integer number (22141350000).

Almost surely, 2^291616492345 is an apocalyptic number.

It is an amenable number.

291616492345 is a deficient number, since it is larger than the sum of its proper divisors (62645107655).

291616492345 is a wasteful number, since it uses less digits than its factorization.

291616492345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209744.

The product of its digits is 2799360, while the sum is 52.

The spelling of 291616492345 in words is "two hundred ninety-one billion, six hundred sixteen million, four hundred ninety-two thousand, three hundred forty-five".