775120216763 has 4 divisors (see below), whose sum is σ = 775328642160. Its totient is φ = 774911791368.

The previous prime is 775120216751. The next prime is 775120216877. The reversal of 775120216763 is 367612021577.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 367612021577 = 1973 ⋅186321349.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-775120216763 is a prime.

It is a super-2 number, since 2×775120216763² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (775120216733) 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, 104207120 + ... + 104214557.

It is an arithmetic number, because the mean of its divisors is an integer number (193832160540).

Almost surely, 2^775120216763 is an apocalyptic number.

775120216763 is a deficient number, since it is larger than the sum of its proper divisors (208425397).

775120216763 is a wasteful number, since it uses less digits than its factorization.

775120216763 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208425396.

The product of its (nonzero) digits is 740880, while the sum is 47.

The spelling of 775120216763 in words is "seven hundred seventy-five billion, one hundred twenty million, two hundred sixteen thousand, seven hundred sixty-three".