2195811892801 has 4 divisors (see below), whose sum is σ = 2255158160212. Its totient is φ = 2136465625392.

The previous prime is 2195811892699. The next prime is 2195811892823. The reversal of 2195811892801 is 1082981185912.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1483097730625 + 712714162176 = 1217825^2 + 844224^2 .

It is a cyclic number.

It is not a de Polignac number, because 2195811892801 - 2³⁹ = 1646056078913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2195811895801) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29673133650 + ... + 29673133723.

It is an arithmetic number, because the mean of its divisors is an integer number (563789540053).

Almost surely, 2^{2195811892801} is an apocalyptic number.

It is an amenable number.

2195811892801 is a deficient number, since it is larger than the sum of its proper divisors (59346267411).

2195811892801 is an equidigital number, since it uses as much as digits as its factorization.

2195811892801 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59346267410.

The product of its (nonzero) digits is 829440, while the sum is 55.

The spelling of 2195811892801 in words is "two trillion, one hundred ninety-five billion, eight hundred eleven million, eight hundred ninety-two thousand, eight hundred one".