256403220350 has 12 divisors (see below), whose sum is σ = 476909989944. Its totient is φ = 102561288120.

The previous prime is 256403220343. The next prime is 256403220419. The reversal of 256403220350 is 53022304652.

It is a super-2 number, since 2×256403220350² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2564032154 + ... + 2564032253.

It is an arithmetic number, because the mean of its divisors is an integer number (39742499162).

Almost surely, 2^256403220350 is an apocalyptic number.

256403220350 is a deficient number, since it is larger than the sum of its proper divisors (220506769594).

256403220350 is a wasteful number, since it uses less digits than its factorization.

256403220350 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5128064419 (or 5128064414 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 32.

The spelling of 256403220350 in words is "two hundred fifty-six billion, four hundred three million, two hundred twenty thousand, three hundred fifty".