766263321616 has 160 divisors (see below), whose sum is σ = 1708018679808. Its totient is φ = 330275996160.

The previous prime is 766263321563. The next prime is 766263321619. The reversal of 766263321616 is 616123362667.

It is a self number, because there is not a number n which added to its sum of digits gives 766263321616.

It is not an unprimeable number, because it can be changed into a prime (766263321619) 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, 96905535 + ... + 96913441.

Almost surely, 2^766263321616 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 766263321616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (854009339904).

766263321616 is an abundant number, since it is smaller than the sum of its proper divisors (941755358192).

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

766263321616 is a wasteful number, since it uses less digits than its factorization.

766263321616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8429 (or 8423 counting only the distinct ones).

The product of its digits is 1959552, while the sum is 49.

The spelling of 766263321616 in words is "seven hundred sixty-six billion, two hundred sixty-three million, three hundred twenty-one thousand, six hundred sixteen".