256742751363346 has 16 divisors (see below), whose sum is σ = 398396793219840. Its totient is φ = 123943884038800.

The previous prime is 256742751363281. The next prime is 256742751363353. The reversal of 256742751363346 is 643363157247652.

It is a super-3 number, since 3×256742751363346³ (a number of 44 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7777180 + ... + 23957671.

It is an arithmetic number, because the mean of its divisors is an integer number (24899799576240).

Almost surely, 2^{256742751363346} is an apocalyptic number.

256742751363346 is a deficient number, since it is larger than the sum of its proper divisors (141654041856494).

256742751363346 is a wasteful number, since it uses less digits than its factorization.

256742751363346 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 31874369.

The product of its digits is 457228800, while the sum is 64.

The spelling of 256742751363346 in words is "two hundred fifty-six trillion, seven hundred forty-two billion, seven hundred fifty-one million, three hundred sixty-three thousand, three hundred forty-six".