268178871803 has 4 divisors (see below), whose sum is σ = 268423338600. Its totient is φ = 267934405008.

The previous prime is 268178871799. The next prime is 268178871811. The reversal of 268178871803 is 308178871862.

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

It is a cyclic number.

It is not a de Polignac number, because 268178871803 - 2² = 268178871799 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268148871803) 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, 122231753 + ... + 122233946.

It is an arithmetic number, because the mean of its divisors is an integer number (67105834650).

Almost surely, 2^268178871803 is an apocalyptic number.

268178871803 is a deficient number, since it is larger than the sum of its proper divisors (244466797).

268178871803 is a wasteful number, since it uses less digits than its factorization.

268178871803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244466796.

The product of its (nonzero) digits is 7225344, while the sum is 59.

Adding to 268178871803 its sum of digits (59), we get a palindrome (268178871862).

The spelling of 268178871803 in words is "two hundred sixty-eight billion, one hundred seventy-eight million, eight hundred seventy-one thousand, eight hundred three".