256735121466452 has 6 divisors (see below), whose sum is σ = 449286462566298. Its totient is φ = 128367560733224.

The previous prime is 256735121466413. The next prime is 256735121466469. The reversal of 256735121466452 is 254664121537652.

It can be written as a sum of positive squares in only one way, i.e., 192324641389456 + 64410480076996 = 13868116^2 + 8025614^2 .

It is a super-2 number, since 2×256735121466452² (a number of 30 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 256735121466391 and 256735121466400.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32091890183303 + ... + 32091890183310.

It is an arithmetic number, because the mean of its divisors is an integer number (74881077094383).

Almost surely, 2^{256735121466452} is an apocalyptic number.

It is an amenable number.

256735121466452 is a deficient number, since it is larger than the sum of its proper divisors (192551341099846).

256735121466452 is a wasteful number, since it uses less digits than its factorization.

256735121466452 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64183780366617 (or 64183780366615 counting only the distinct ones).

The product of its digits is 72576000, while the sum is 59.

The spelling of 256735121466452 in words is "two hundred fifty-six trillion, seven hundred thirty-five billion, one hundred twenty-one million, four hundred sixty-six thousand, four hundred fifty-two".