256404512510 has 8 divisors (see below), whose sum is σ = 461528122536. Its totient is φ = 102561805000.

The previous prime is 256404512503. The next prime is 256404512519. The reversal of 256404512510 is 15215404652.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256404512519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12820225616 + ... + 12820225635.

It is an arithmetic number, because the mean of its divisors is an integer number (57691015317).

Almost surely, 2^256404512510 is an apocalyptic number.

256404512510 is a deficient number, since it is larger than the sum of its proper divisors (205123610026).

256404512510 is a wasteful number, since it uses less digits than its factorization.

256404512510 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25640451258.

The product of its (nonzero) digits is 48000, while the sum is 35.

The spelling of 256404512510 in words is "two hundred fifty-six billion, four hundred four million, five hundred twelve thousand, five hundred ten".