6465661792 has 48 divisors (see below), whose sum is σ = 13295031120. Its totient is φ = 3092110848.

The previous prime is 6465661771. The next prime is 6465661819. The reversal of 6465661792 is 2971665646.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23578 + ... + 116134.

It is an arithmetic number, because the mean of its divisors is an integer number (276979815).

Almost surely, 2^6465661792 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6465661792, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6647515560).

6465661792 is an abundant number, since it is smaller than the sum of its proper divisors (6829369328).

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

6465661792 is a wasteful number, since it uses less digits than its factorization.

6465661792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 92663 (or 92655 counting only the distinct ones).

The product of its digits is 3265920, while the sum is 52.

The square root of 6465661792 is about 80409.3389600984. The cubic root of 6465661792 is about 1862.9634218932.

The spelling of 6465661792 in words is "six billion, four hundred sixty-five million, six hundred sixty-one thousand, seven hundred ninety-two".