256448030070 has 32 divisors (see below), whose sum is σ = 615560143968. Its totient is φ = 68376711168.

The previous prime is 256448030021. The next prime is 256448030101. The reversal of 256448030070 is 70030844652.

It is a happy number.

It is a congruent number.

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, 366829 + ... + 804648.

It is an arithmetic number, because the mean of its divisors is an integer number (19236254499).

Almost surely, 2^256448030070 is an apocalyptic number.

256448030070 is an abundant number, since it is smaller than the sum of its proper divisors (359112113898).

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

256448030070 is a wasteful number, since it uses less digits than its factorization.

256448030070 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1178784.

The product of its (nonzero) digits is 161280, while the sum is 39.

The spelling of 256448030070 in words is "two hundred fifty-six billion, four hundred forty-eight million, thirty thousand, seventy".