256743504214115 has 8 divisors (see below), whose sum is σ = 309640407093600. Its totient is φ = 204362668680192.

The previous prime is 256743504214103. The next prime is 256743504214181. The reversal of 256743504214115 is 511412405347652.

256743504214115 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 256743504214115 - 2²⁶ = 256743437105251 is a prime.

It is a super-2 number, since 2×256743504214115² (a number of 30 digits) contains 22 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, 129016835294 + ... + 129016837283.

It is an arithmetic number, because the mean of its divisors is an integer number (38705050886700).

Almost surely, 2^{256743504214115} is an apocalyptic number.

256743504214115 is a deficient number, since it is larger than the sum of its proper divisors (52896902879485).

256743504214115 is a wasteful number, since it uses less digits than its factorization.

256743504214115 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 258033672781.

The product of its (nonzero) digits is 4032000, while the sum is 50.

The spelling of 256743504214115 in words is "two hundred fifty-six trillion, seven hundred forty-three billion, five hundred four million, two hundred fourteen thousand, one hundred fifteen".