653981989189356 has 72 divisors (see below), whose sum is σ = 1725011990563680. Its totient is φ = 208514060181504.

The previous prime is 653981989189307. The next prime is 653981989189357.

653981989189356 is a `hidden beast` number, since 6 + 5 + 3 + 9 + 8 + 1 + 98 + 91 + 89 + 356 = 666.

653981989189356 is nontrivially palindromic in base 10.

653981989189356 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (653981989189357) 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, 86898450 + ... + 94123878.

It is an arithmetic number, because the mean of its divisors is an integer number (23958499868940).

Almost surely, 2^{653981989189356} is an apocalyptic number.

It is an amenable number.

653981989189356 is an abundant number, since it is smaller than the sum of its proper divisors (1071030001374324).

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

653981989189356 is a wasteful number, since it uses less digits than its factorization.

653981989189356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7334775 (or 7334770 counting only the distinct ones).

The product of its digits is 27209779200, while the sum is 90.

The spelling of 653981989189356 in words is "six hundred fifty-three trillion, nine hundred eighty-one billion, nine hundred eighty-nine million, one hundred eighty-nine thousand, three hundred fifty-six".