256090990080 has 160 divisors (see below), whose sum is σ = 845101052928. Its totient is φ = 66087936000.

The previous prime is 256090990039. The next prime is 256090990109. The reversal of 256090990080 is 80099090652.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 299746 + ... + 775905.

Almost surely, 2^256090990080 is an apocalyptic number.

256090990080 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

256090990080 is an abundant number, since it is smaller than the sum of its proper divisors (589010062848).

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

256090990080 is a wasteful number, since it uses less digits than its factorization.

256090990080 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1075708 (or 1075692 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 48.

The spelling of 256090990080 in words is "two hundred fifty-six billion, ninety million, nine hundred ninety thousand, eighty".