291442298216 has 16 divisors (see below), whose sum is σ = 554610344640. Its totient is φ = 143546206320.

The previous prime is 291442298207. The next prime is 291442298221. The reversal of 291442298216 is 612892244192.

It is a super-2 number, since 2×291442298216² (a number of 24 digits) contains 22 as substring.

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, 271867280 + ... + 271868351.

It is an arithmetic number, because the mean of its divisors is an integer number (34663146540).

Almost surely, 2^291442298216 is an apocalyptic number.

It is an amenable number.

291442298216 is a deficient number, since it is larger than the sum of its proper divisors (263168046424).

291442298216 is a wasteful number, since it uses less digits than its factorization.

291442298216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543735704 (or 543735700 counting only the distinct ones).

The product of its digits is 995328, while the sum is 50.

The spelling of 291442298216 in words is "two hundred ninety-one billion, four hundred forty-two million, two hundred ninety-eight thousand, two hundred sixteen".