775425673860 has 96 divisors (see below), whose sum is σ = 2251663747200. Its totient is φ = 199151769600.

The previous prime is 775425673817. The next prime is 775425673909. The reversal of 775425673860 is 68376524577.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 775425673794 and 775425673803.

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, 142071 + ... + 1253409.

It is an arithmetic number, because the mean of its divisors is an integer number (23454830700).

Almost surely, 2^775425673860 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 775425673860, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1125831873600).

775425673860 is an abundant number, since it is smaller than the sum of its proper divisors (1476238073340).

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

775425673860 is a wasteful number, since it uses less digits than its factorization.

775425673860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1111781 (or 1111779 counting only the distinct ones).

The product of its (nonzero) digits is 59270400, while the sum is 60.

The spelling of 775425673860 in words is "seven hundred seventy-five billion, four hundred twenty-five million, six hundred seventy-three thousand, eight hundred sixty".