291344981052 has 24 divisors (see below), whose sum is σ = 682722580176. Its totient is φ = 96698190208.

The previous prime is 291344981041. The next prime is 291344981077. The reversal of 291344981052 is 250189443192.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 291344980992 and 291344981010.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 52097523 + ... + 52103114.

It is an arithmetic number, because the mean of its divisors is an integer number (28446774174).

Almost surely, 2^291344981052 is an apocalyptic number.

It is an amenable number.

291344981052 is an abundant number, since it is smaller than the sum of its proper divisors (391377599124).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

291344981052 is a wasteful number, since it uses less digits than its factorization.

291344981052 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104200877 (or 104200875 counting only the distinct ones).

The product of its (nonzero) digits is 622080, while the sum is 48.

The spelling of 291344981052 in words is "two hundred ninety-one billion, three hundred forty-four million, nine hundred eighty-one thousand, fifty-two".