11645989729 has 24 divisors (see below), whose sum is σ = 12971266560. Its totient is φ = 10447140000.

The previous prime is 11645989711. The next prime is 11645989739. The reversal of 11645989729 is 92798954611.

It is not a de Polignac number, because 11645989729 - 2²³ = 11637601121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11645989739) 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, 4043712 + ... + 4046590.

It is an arithmetic number, because the mean of its divisors is an integer number (540469440).

Almost surely, 2^11645989729 is an apocalyptic number.

It is an amenable number.

11645989729 is a deficient number, since it is larger than the sum of its proper divisors (1325276831).

11645989729 is a wasteful number, since it uses less digits than its factorization.

11645989729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3333 (or 3322 counting only the distinct ones).

The product of its digits is 9797760, while the sum is 61.

The spelling of 11645989729 in words is "eleven billion, six hundred forty-five million, nine hundred eighty-nine thousand, seven hundred twenty-nine".