256400122330 has 16 divisors (see below), whose sum is σ = 503476604064. Its totient is φ = 93236408080.

The previous prime is 256400122309. The next prime is 256400122331. The reversal of 256400122330 is 33221004652.

256400122330 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not an unprimeable number, because it can be changed into a prime (256400122331) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1165454992 + ... + 1165455211.

It is an arithmetic number, because the mean of its divisors is an integer number (31467287754).

Almost surely, 2^256400122330 is an apocalyptic number.

256400122330 is a deficient number, since it is larger than the sum of its proper divisors (247076481734).

256400122330 is a wasteful number, since it uses less digits than its factorization.

256400122330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2330910221.

The product of its (nonzero) digits is 8640, while the sum is 28.

Adding to 256400122330 its reverse (33221004652), we get a palindrome (289621126982).

The spelling of 256400122330 in words is "two hundred fifty-six billion, four hundred million, one hundred twenty-two thousand, three hundred thirty".