43245720089 has 32 divisors (see below), whose sum is σ = 53512704000. Its totient is φ = 34359197760.

The previous prime is 43245720059. The next prime is 43245720097. The reversal of 43245720089 is 98002754234.

It is a cyclic number.

It is not a de Polignac number, because 43245720089 - 2²⁸ = 42977284633 is a prime.

It is a super-2 number, since 2×43245720089² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (43245720059) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5699192 + ... + 5706774.

It is an arithmetic number, because the mean of its divisors is an integer number (1672272000).

Almost surely, 2^43245720089 is an apocalyptic number.

It is an amenable number.

43245720089 is a deficient number, since it is larger than the sum of its proper divisors (10266983911).

43245720089 is a wasteful number, since it uses less digits than its factorization.

43245720089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9725.

The product of its (nonzero) digits is 483840, while the sum is 44.

The spelling of 43245720089 in words is "forty-three billion, two hundred forty-five million, seven hundred twenty thousand, eighty-nine".