581256428434 has 64 divisors (see below), whose sum is σ = 968869693440. Its totient is φ = 259333888000.

The previous prime is 581256428429. The next prime is 581256428447. The reversal of 581256428434 is 434824652185.

It is a happy number.

581256428434 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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, 221767644 + ... + 221770264.

It is an arithmetic number, because the mean of its divisors is an integer number (15138588960).

Almost surely, 2^581256428434 is an apocalyptic number.

581256428434 is a deficient number, since it is larger than the sum of its proper divisors (387613265006).

581256428434 is a wasteful number, since it uses less digits than its factorization.

581256428434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3507.

The product of its digits is 7372800, while the sum is 52.

The spelling of 581256428434 in words is "five hundred eighty-one billion, two hundred fifty-six million, four hundred twenty-eight thousand, four hundred thirty-four".