256735111201204 has 48 divisors (see below), whose sum is σ = 465090957596160. Its totient is φ = 123875861598720.

The previous prime is 256735111201201. The next prime is 256735111201211. The reversal of 256735111201204 is 402102111537652.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (256735111201201) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64601392 + ... + 68460280.

It is an arithmetic number, because the mean of its divisors is an integer number (9689394949920).

Almost surely, 2^{256735111201204} is an apocalyptic number.

It is an amenable number.

256735111201204 is a deficient number, since it is larger than the sum of its proper divisors (208355846394956).

256735111201204 is a wasteful number, since it uses less digits than its factorization.

256735111201204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3860440 (or 3860438 counting only the distinct ones).

The product of its (nonzero) digits is 100800, while the sum is 40.

Adding to 256735111201204 its reverse (402102111537652), we get a palindrome (658837222738856).

The spelling of 256735111201204 in words is "two hundred fifty-six trillion, seven hundred thirty-five billion, one hundred eleven million, two hundred one thousand, two hundred four".