268940295869 has 4 divisors (see below), whose sum is σ = 307360338144. Its totient is φ = 230520253596.

The previous prime is 268940295859. The next prime is 268940295881. The reversal of 268940295869 is 968592049862.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 968592049862 = 2 ⋅484296024931.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-268940295869 is a prime.

It is a super-2 number, since 2×268940295869² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 268940295799 and 268940295808.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268940295829) 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, 19210021127 + ... + 19210021140.

It is an arithmetic number, because the mean of its divisors is an integer number (76840084536).

Almost surely, 2^268940295869 is an apocalyptic number.

It is an amenable number.

268940295869 is a deficient number, since it is larger than the sum of its proper divisors (38420042275).

268940295869 is an equidigital number, since it uses as much as digits as its factorization.

268940295869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38420042274.

The product of its (nonzero) digits is 134369280, while the sum is 68.

The spelling of 268940295869 in words is "two hundred sixty-eight billion, nine hundred forty million, two hundred ninety-five thousand, eight hundred sixty-nine".