765651435648 has 256 divisors, whose sum is σ = 2424944148480. Its totient is φ = 211322880000.

The previous prime is 765651435623. The next prime is 765651435691. The reversal of 765651435648 is 846534156567.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 765651435591 and 765651435600.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2054073 + ... + 2398023.

It is an arithmetic number, because the mean of its divisors is an integer number (9472438080).

Almost surely, 2^765651435648 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 765651435648, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1212472074240).

765651435648 is an abundant number, since it is smaller than the sum of its proper divisors (1659292712832).

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

765651435648 is a wasteful number, since it uses less digits than its factorization.

765651435648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 344027 (or 344015 counting only the distinct ones).

The product of its digits is 72576000, while the sum is 60.

The spelling of 765651435648 in words is "seven hundred sixty-five billion, six hundred fifty-one million, four hundred thirty-five thousand, six hundred forty-eight".