255623345578 has 8 divisors (see below), whose sum is σ = 383447359872. Its totient is φ = 127807558956.

The previous prime is 255623345449. The next prime is 255623345599. The reversal of 255623345578 is 875543326552.

It is a happy number.

255623345578 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×255623345578² (a number of 24 digits) contains 22 as substring.

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, 1978650 + ... + 2103877.

It is an arithmetic number, because the mean of its divisors is an integer number (47930919984).

Almost surely, 2^255623345578 is an apocalyptic number.

255623345578 is a deficient number, since it is larger than the sum of its proper divisors (127824014294).

255623345578 is a wasteful number, since it uses less digits than its factorization.

255623345578 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4113836.

The product of its digits is 30240000, while the sum is 55.

The spelling of 255623345578 in words is "two hundred fifty-five billion, six hundred twenty-three million, three hundred forty-five thousand, five hundred seventy-eight".