2195891543500 has 24 divisors (see below), whose sum is σ = 4795827132096. Its totient is φ = 878356617200.

The previous prime is 2195891543497. The next prime is 2195891543507. The reversal of 2195891543500 is 53451985912.

It is not an unprimeable number, because it can be changed into a prime (2195891543507) 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, 2195891044 + ... + 2195892043.

It is an arithmetic number, because the mean of its divisors is an integer number (199826130504).

Almost surely, 2^{2195891543500} is an apocalyptic number.

2195891543500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2195891543500 is an abundant number, since it is smaller than the sum of its proper divisors (2599935588596).

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

2195891543500 is a wasteful number, since it uses less digits than its factorization.

2195891543500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4391783106 (or 4391783094 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 52.

The spelling of 2195891543500 in words is "two trillion, one hundred ninety-five billion, eight hundred ninety-one million, five hundred forty-three thousand, five hundred".