2194548697872 has 60 divisors (see below), whose sum is σ = 6179367505584. Its totient is φ = 727028395200.

The previous prime is 2194548697823. The next prime is 2194548697879. The reversal of 2194548697872 is 2787968454912.

It is a happy number.

2194548697872 is a `hidden beast` number, since 2 + 1 + 9 + 4 + 5 + 486 + 9 + 78 + 72 = 666.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a self number, because there is not a number n which added to its sum of digits gives 2194548697872.

It is not an unprimeable number, because it can be changed into a prime (2194548697879) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46724754 + ... + 46771697.

Almost surely, 2^{2194548697872} is an apocalyptic number.

It is an amenable number.

2194548697872 is an abundant number, since it is smaller than the sum of its proper divisors (3984818807712).

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

2194548697872 is a wasteful number, since it uses less digits than its factorization.

2194548697872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93496628 (or 93496619 counting only the distinct ones).

The product of its digits is 487710720, while the sum is 72.

The spelling of 2194548697872 in words is "two trillion, one hundred ninety-four billion, five hundred forty-eight million, six hundred ninety-seven thousand, eight hundred seventy-two".