268611809787 has 12 divisors (see below), whose sum is σ = 408415617480. Its totient is φ = 169649563968.

The previous prime is 268611809773. The next prime is 268611809813. The reversal of 268611809787 is 787908116862.

268611809787 is a `hidden beast` number, since 2 + 6 + 8 + 611 + 8 + 0 + 9 + 7 + 8 + 7 = 666.

It is not a de Polignac number, because 268611809787 - 2¹² = 268611805691 is a prime.

It is a hoax number, since the sum of its digits (63) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (268611809737) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 785414478 + ... + 785414819.

It is an arithmetic number, because the mean of its divisors is an integer number (34034634790).

Almost surely, 2^268611809787 is an apocalyptic number.

268611809787 is a deficient number, since it is larger than the sum of its proper divisors (139803807693).

268611809787 is a wasteful number, since it uses less digits than its factorization.

268611809787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1570829322 (or 1570829319 counting only the distinct ones).

The product of its (nonzero) digits is 16257024, while the sum is 63.

The spelling of 268611809787 in words is "two hundred sixty-eight billion, six hundred eleven million, eight hundred nine thousand, seven hundred eighty-seven".