2091214550591 has 8 divisors (see below), whose sum is σ = 2214515582784. Its totient is φ = 1967945564160.

The previous prime is 2091214550587. The next prime is 2091214550599. The reversal of 2091214550591 is 1950554121902.

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

It is a cyclic number.

It is not a de Polignac number, because 2091214550591 - 2² = 2091214550587 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2091214550599) 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, 7877015 + ... + 8138168.

It is an arithmetic number, because the mean of its divisors is an integer number (276814447848).

Almost surely, 2^{2091214550591} is an apocalyptic number.

2091214550591 is a deficient number, since it is larger than the sum of its proper divisors (123301032193).

2091214550591 is a wasteful number, since it uses less digits than its factorization.

2091214550591 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16022881.

The product of its (nonzero) digits is 162000, while the sum is 44.

The spelling of 2091214550591 in words is "two trillion, ninety-one billion, two hundred fourteen million, five hundred fifty thousand, five hundred ninety-one".