291319254016 has 88 divisors (see below), whose sum is σ = 672010776320. Its totient is φ = 123638648832.

The previous prime is 291319254013. The next prime is 291319254089. The reversal of 291319254016 is 610452913192.

It is not an unprimeable number, because it can be changed into a prime (291319254013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 541015 + ... + 935593.

Almost surely, 2^291319254016 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 291319254016, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (336005388160).

291319254016 is an abundant number, since it is smaller than the sum of its proper divisors (380691522304).

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

291319254016 is a wasteful number, since it uses less digits than its factorization.

291319254016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 394709 (or 394691 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 43.

The spelling of 291319254016 in words is "two hundred ninety-one billion, three hundred nineteen million, two hundred fifty-four thousand, sixteen".