83964657009 has 8 divisors (see below), whose sum is σ = 111959419072. Its totient is φ = 55973166480.

The previous prime is 83964656999. The next prime is 83964657031. The reversal of 83964657009 is 90075646938.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 83964657009 - 2⁵ = 83964656977 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 83964657009.

It is not an unprimeable number, because it can be changed into a prime (83964657209) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 757357 + ... + 861114.

It is an arithmetic number, because the mean of its divisors is an integer number (13994927384).

Almost surely, 2^83964657009 is an apocalyptic number.

It is an amenable number.

83964657009 is a deficient number, since it is larger than the sum of its proper divisors (27994762063).

83964657009 is a wasteful number, since it uses less digits than its factorization.

83964657009 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1635767.

The product of its (nonzero) digits is 9797760, while the sum is 57.

The spelling of 83964657009 in words is "eighty-three billion, nine hundred sixty-four million, six hundred fifty-seven thousand, nine".