779544065491 has 4 divisors (see below), whose sum is σ = 779548471072. Its totient is φ = 779539659912.

The previous prime is 779544065473. The next prime is 779544065507. The reversal of 779544065491 is 194560445977.

779544065491 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 779544065491 - 2¹¹ = 779544063443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (779544065401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1925760 + ... + 2295133.

It is an arithmetic number, because the mean of its divisors is an integer number (194887117768).

Almost surely, 2^779544065491 is an apocalyptic number.

779544065491 is a deficient number, since it is larger than the sum of its proper divisors (4405581).

779544065491 is a wasteful number, since it uses less digits than its factorization.

779544065491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4405580.

The product of its (nonzero) digits is 38102400, while the sum is 61.

The spelling of 779544065491 in words is "seven hundred seventy-nine billion, five hundred forty-four million, sixty-five thousand, four hundred ninety-one".