256500473046550 has 24 divisors (see below), whose sum is σ = 479174246175600. Its totient is φ = 102152153453280.

The previous prime is 256500473046547. The next prime is 256500473046607. The reversal of 256500473046550 is 55640374005652.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11200882570 + ... + 11200905469.

It is an arithmetic number, because the mean of its divisors is an integer number (19965593590650).

Almost surely, 2^{256500473046550} is an apocalyptic number.

256500473046550 is a deficient number, since it is larger than the sum of its proper divisors (222673773129050).

256500473046550 is a wasteful number, since it uses less digits than its factorization.

256500473046550 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22401788280 (or 22401788275 counting only the distinct ones).

The product of its (nonzero) digits is 15120000, while the sum is 52.

The spelling of 256500473046550 in words is "two hundred fifty-six trillion, five hundred billion, four hundred seventy-three million, forty-six thousand, five hundred fifty".