291011648907 has 12 divisors (see below), whose sum is σ = 451365006696. Its totient is φ = 166292370720.

The previous prime is 291011648899. The next prime is 291011648971. The reversal of 291011648907 is 709846110192.

It is not a de Polignac number, because 291011648907 - 2³ = 291011648899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (291011648107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 989835394 + ... + 989835687.

It is an arithmetic number, because the mean of its divisors is an integer number (37613750558).

Almost surely, 2^291011648907 is an apocalyptic number.

291011648907 is a deficient number, since it is larger than the sum of its proper divisors (160353357789).

291011648907 is a wasteful number, since it uses less digits than its factorization.

291011648907 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1979671098 (or 1979671091 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 48.

The spelling of 291011648907 in words is "two hundred ninety-one billion, eleven million, six hundred forty-eight thousand, nine hundred seven".