268911111381 has 32 divisors (see below), whose sum is σ = 392244228096. Its totient is φ = 162518400000.

The previous prime is 268911111331. The next prime is 268911111431. The reversal of 268911111381 is 183111119862.

It is an interprime number because it is at equal distance from previous prime (268911111331) and next prime (268911111431).

It is not a de Polignac number, because 268911111381 - 2⁶ = 268911111317 is a prime.

It is a super-2 number, since 2×268911111381² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268911111331) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 18862506 + ... + 18876756.

It is an arithmetic number, because the mean of its divisors is an integer number (12257632128).

Almost surely, 2^268911111381 is an apocalyptic number.

It is an amenable number.

268911111381 is a deficient number, since it is larger than the sum of its proper divisors (123333116715).

268911111381 is a wasteful number, since it uses less digits than its factorization.

268911111381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15833.

The product of its digits is 20736, while the sum is 42.

The spelling of 268911111381 in words is "two hundred sixty-eight billion, nine hundred eleven million, one hundred eleven thousand, three hundred eighty-one".