133681583643 has 16 divisors (see below), whose sum is σ = 182527066656. Its totient is φ = 86995650560.

The previous prime is 133681583597. The next prime is 133681583723. The reversal of 133681583643 is 346385186331.

It is a cyclic number.

It is not a de Polignac number, because 133681583643 - 2²⁴ = 133664806427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (133681585643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2102598 + ... + 2165243.

It is an arithmetic number, because the mean of its divisors is an integer number (11407941666).

Almost surely, 2^133681583643 is an apocalyptic number.

133681583643 is a deficient number, since it is larger than the sum of its proper divisors (48845483013).

133681583643 is a wasteful number, since it uses less digits than its factorization.

133681583643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4268094.

The product of its digits is 3732480, while the sum is 51.

The spelling of 133681583643 in words is "one hundred thirty-three billion, six hundred eighty-one million, five hundred eighty-three thousand, six hundred forty-three".