256048909338 has 32 divisors (see below), whose sum is σ = 519155801856. Its totient is φ = 84173499648.

The previous prime is 256048909313. The next prime is 256048909393. The reversal of 256048909338 is 833909840652.

It is a super-2 number, since 2×256048909338² (a number of 24 digits) contains 22 as substring.

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, 10450270 + ... + 10474742.

It is an arithmetic number, because the mean of its divisors is an integer number (16223618808).

Almost surely, 2^256048909338 is an apocalyptic number.

256048909338 is an abundant number, since it is smaller than the sum of its proper divisors (263106892518).

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

256048909338 is a wasteful number, since it uses less digits than its factorization.

256048909338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48438.

The product of its (nonzero) digits is 11197440, while the sum is 57.

The spelling of 256048909338 in words is "two hundred fifty-six billion, forty-eight million, nine hundred nine thousand, three hundred thirty-eight".