78425435456 has 28 divisors (see below), whose sum is σ = 155640987168. Its totient is φ = 39208808832.

The previous prime is 78425435437. The next prime is 78425435477. The reversal of 78425435456 is 65453452487.

It is a junction number, because it is equal to n+sod(n) for n = 78425435398 and 78425435407.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 650165 + ... + 761291.

Almost surely, 2^78425435456 is an apocalyptic number.

It is an amenable number.

78425435456 is a deficient number, since it is larger than the sum of its proper divisors (77215551712).

78425435456 is a wasteful number, since it uses less digits than its factorization.

78425435456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122166 (or 122156 counting only the distinct ones).

The product of its digits is 16128000, while the sum is 53.

The spelling of 78425435456 in words is "seventy-eight billion, four hundred twenty-five million, four hundred thirty-five thousand, four hundred fifty-six".