268447877685 has 48 divisors (see below), whose sum is σ = 504177133824. Its totient is φ = 131348117376.

The previous prime is 268447877617. The next prime is 268447877689. The reversal of 268447877685 is 586778744862.

268447877685 is a `hidden beast` number, since 2 + 6 + 8 + 4 + 478 + 7 + 76 + 85 = 666.

268447877685 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 268447877685 - 2¹³ = 268447869493 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268447877689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1312269 + ... + 1502978.

It is an arithmetic number, because the mean of its divisors is an integer number (10503690288).

Almost surely, 2^268447877685 is an apocalyptic number.

It is an amenable number.

268447877685 is a deficient number, since it is larger than the sum of its proper divisors (235729256139).

268447877685 is a wasteful number, since it uses less digits than its factorization.

268447877685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2815434 (or 2815431 counting only the distinct ones).

The product of its digits is 1011548160, while the sum is 72.

The spelling of 268447877685 in words is "two hundred sixty-eight billion, four hundred forty-seven million, eight hundred seventy-seven thousand, six hundred eighty-five".