1144620684891 has 24 divisors (see below), whose sum is σ = 1772755807680. Its totient is φ = 709102308096.

The previous prime is 1144620684833. The next prime is 1144620684937. The reversal of 1144620684891 is 1984860264411.

1144620684891 is a `hidden beast` number, since 1 + 1 + 4 + 4 + 620 + 6 + 8 + 4 + 8 + 9 + 1 = 666.

It is not a de Polignac number, because 1144620684891 - 2⁹ = 1144620684379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1144620684821) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 47337160 + ... + 47361333.

It is an arithmetic number, because the mean of its divisors is an integer number (73864825320).

Almost surely, 2^{1144620684891} is an apocalyptic number.

1144620684891 is a deficient number, since it is larger than the sum of its proper divisors (628135122789).

1144620684891 is a wasteful number, since it uses less digits than its factorization.

1144620684891 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94698595 (or 94698592 counting only the distinct ones).

The product of its (nonzero) digits is 2654208, while the sum is 54.

The spelling of 1144620684891 in words is "one trillion, one hundred forty-four billion, six hundred twenty million, six hundred eighty-four thousand, eight hundred ninety-one".