776272727447 has 4 divisors (see below), whose sum is σ = 887168831376. Its totient is φ = 665376623520.

The previous prime is 776272727443. The next prime is 776272727497. The reversal of 776272727447 is 744727272677.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 744727272677 = 251 ⋅2967040927.

It is not a de Polignac number, because 776272727447 - 2² = 776272727443 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 776272727447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (776272727443) 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, 55448051954 + ... + 55448051967.

It is an arithmetic number, because the mean of its divisors is an integer number (221792207844).

Almost surely, 2^776272727447 is an apocalyptic number.

776272727447 is a deficient number, since it is larger than the sum of its proper divisors (110896103929).

776272727447 is a wasteful number, since it uses less digits than its factorization.

776272727447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110896103928.

The product of its digits is 90354432, while the sum is 62.

The spelling of 776272727447 in words is "seven hundred seventy-six billion, two hundred seventy-two million, seven hundred twenty-seven thousand, four hundred forty-seven".