776665255236020 has 96 divisors (see below), whose sum is σ = 1690018738087680. Its totient is φ = 299459516840960.

The previous prime is 776665255235957. The next prime is 776665255236053. The reversal of 776665255236020 is 20632552566677.

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 31 ways as a sum of consecutive naturals, for example, 1036989875 + ... + 1037738565.

It is an arithmetic number, because the mean of its divisors is an integer number (17604361855080).

Almost surely, 2^{776665255236020} 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 776665255236020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (845009369043840).

776665255236020 is an abundant number, since it is smaller than the sum of its proper divisors (913353482851660).

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

776665255236020 is a wasteful number, since it uses less digits than its factorization.

776665255236020 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 751673 (or 751671 counting only the distinct ones).

The product of its (nonzero) digits is 190512000, while the sum is 62.

The spelling of 776665255236020 in words is "seven hundred seventy-six trillion, six hundred sixty-five billion, two hundred fifty-five million, two hundred thirty-six thousand, twenty".