291012672291 has 8 divisors (see below), whose sum is σ = 423291159744. Its totient is φ = 176371316520.

The previous prime is 291012672289. The next prime is 291012672317. The reversal of 291012672291 is 192276210192.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 291012672291 - 2¹ = 291012672289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (291012672271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4409282881 + ... + 4409282946.

It is an arithmetic number, because the mean of its divisors is an integer number (52911394968).

Almost surely, 2^291012672291 is an apocalyptic number.

291012672291 is a deficient number, since it is larger than the sum of its proper divisors (132278487453).

291012672291 is a wasteful number, since it uses less digits than its factorization.

291012672291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8818565841.

The product of its (nonzero) digits is 54432, while the sum is 42.

The spelling of 291012672291 in words is "two hundred ninety-one billion, twelve million, six hundred seventy-two thousand, two hundred ninety-one".