256303303541540 has 48 divisors (see below), whose sum is σ = 555622687570944. Its totient is φ = 99210026966400.

The previous prime is 256303303541491. The next prime is 256303303541591. The reversal of 256303303541540 is 45145303303652.

It is a junction number, because it is equal to n+sod(n) for n = 256303303541491 and 256303303541500.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6180422 + ... + 23469218.

It is an arithmetic number, because the mean of its divisors is an integer number (11575472657728).

Almost surely, 2^{256303303541540} is an apocalyptic number.

256303303541540 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256303303541540 is an abundant number, since it is smaller than the sum of its proper divisors (299319384029404).

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

256303303541540 is a wasteful number, since it uses less digits than its factorization.

256303303541540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17312748 (or 17312746 counting only the distinct ones).

The product of its (nonzero) digits is 1944000, while the sum is 44.

The spelling of 256303303541540 in words is "two hundred fifty-six trillion, three hundred three billion, three hundred three million, five hundred forty-one thousand, five hundred forty".