256612226146548 has 48 divisors (see below), whose sum is σ = 630284878487040. Its totient is φ = 81034252437600.

The previous prime is 256612226146547. The next prime is 256612226146589. The reversal of 256612226146548 is 845641622216652.

It is a junction number, because it is equal to n+sod(n) for n = 256612226146491 and 256612226146500.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256612226146547) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 7413513 + ... + 23836623.

It is an arithmetic number, because the mean of its divisors is an integer number (13130934968480).

Almost surely, 2^{256612226146548} is an apocalyptic number.

It is an amenable number.

256612226146548 is an abundant number, since it is smaller than the sum of its proper divisors (373672652340492).

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

256612226146548 is a wasteful number, since it uses less digits than its factorization.

256612226146548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16491668 (or 16491666 counting only the distinct ones).

The product of its digits is 66355200, while the sum is 60.

The spelling of 256612226146548 in words is "two hundred fifty-six trillion, six hundred twelve billion, two hundred twenty-six million, one hundred forty-six thousand, five hundred forty-eight".