291086641212 has 48 divisors (see below), whose sum is σ = 709986816000. Its totient is φ = 92710313280.

The previous prime is 291086641207. The next prime is 291086641213. The reversal of 291086641212 is 212146680192.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (291086641213) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4923087 + ... + 4981862.

It is an arithmetic number, because the mean of its divisors is an integer number (14791392000).

Almost surely, 2^291086641212 is an apocalyptic number.

It is an amenable number.

291086641212 is an abundant number, since it is smaller than the sum of its proper divisors (418900174788).

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

291086641212 is a wasteful number, since it uses less digits than its factorization.

291086641212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9905066 (or 9905064 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The spelling of 291086641212 in words is "two hundred ninety-one billion, eighty-six million, six hundred forty-one thousand, two hundred twelve".