256316220053722 has 4 divisors (see below), whose sum is σ = 384474330080586. Its totient is φ = 128158110026860.

The previous prime is 256316220053683. The next prime is 256316220053759. The reversal of 256316220053722 is 227350022613652.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 212628337131961 + 43687882921761 = 14581781^2 + 6609681^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64079055013429 + ... + 64079055013432.

Almost surely, 2^{256316220053722} is an apocalyptic number.

256316220053722 is a deficient number, since it is larger than the sum of its proper divisors (128158110026864).

256316220053722 is a wasteful number, since it uses less digits than its factorization.

256316220053722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128158110026863.

The product of its (nonzero) digits is 1814400, while the sum is 46.

The spelling of 256316220053722 in words is "two hundred fifty-six trillion, three hundred sixteen billion, two hundred twenty million, fifty-three thousand, seven hundred twenty-two".