2091591797760 has 440 divisors, whose sum is σ = 7541308255536. Its totient is φ = 554318069760.

The previous prime is 2091591797759. The next prime is 2091591797773. The reversal of 2091591797760 is 677971951902.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 67583890 + ... + 67614830.

Almost surely, 2^{2091591797760} is an apocalyptic number.

2091591797760 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2091591797760, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3770654127768).

2091591797760 is an abundant number, since it is smaller than the sum of its proper divisors (5449716457776).

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

2091591797760 is a wasteful number, since it uses less digits than its factorization.

2091591797760 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31141 (or 31114 counting only the distinct ones).

The product of its (nonzero) digits is 15002820, while the sum is 63.

The spelling of 2091591797760 in words is "two trillion, ninety-one billion, five hundred ninety-one million, seven hundred ninety-seven thousand, seven hundred sixty".