2191315134576 has 80 divisors (see below), whose sum is σ = 5959086272640. Its totient is φ = 691965584640.

The previous prime is 2191315134511. The next prime is 2191315134577. The reversal of 2191315134576 is 6754315131912.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2191315134577) 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, 37491391 + ... + 37549793.

It is an arithmetic number, because the mean of its divisors is an integer number (74488578408).

Almost surely, 2^{2191315134576} is an apocalyptic number.

It is an amenable number.

2191315134576 is an abundant number, since it is smaller than the sum of its proper divisors (3767771138064).

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

2191315134576 is a wasteful number, since it uses less digits than its factorization.

2191315134576 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 99574 (or 99568 counting only the distinct ones).

The product of its digits is 680400, while the sum is 48.

The spelling of 2191315134576 in words is "two trillion, one hundred ninety-one billion, three hundred fifteen million, one hundred thirty-four thousand, five hundred seventy-six".