268157260843 has 4 divisors (see below), whose sum is σ = 279816272208. Its totient is φ = 256498249480.

The previous prime is 268157260829. The next prime is 268157260873. The reversal of 268157260843 is 348062751862.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268157260843 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268157260873) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5829505648 + ... + 5829505693.

It is an arithmetic number, because the mean of its divisors is an integer number (69954068052).

Almost surely, 2^268157260843 is an apocalyptic number.

268157260843 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

268157260843 is a deficient number, since it is larger than the sum of its proper divisors (11659011365).

268157260843 is a wasteful number, since it uses less digits than its factorization.

268157260843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11659011364.

The product of its (nonzero) digits is 3870720, while the sum is 52.

The spelling of 268157260843 in words is "two hundred sixty-eight billion, one hundred fifty-seven million, two hundred sixty thousand, eight hundred forty-three".