1285975191168 has 96 divisors (see below), whose sum is σ = 3837584237760. Its totient is φ = 428658386688.

The previous prime is 1285975191167. The next prime is 1285975191187. The reversal of 1285975191168 is 8611915795821.

1285975191168 is a `hidden beast` number, since 1 + 2 + 8 + 59 + 7 + 519 + 1 + 1 + 68 = 666.

It is a tau number, because it is divible by the number of its divisors (96).

It is not an unprimeable number, because it can be changed into a prime (1285975191167) 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, 20641080 + ... + 20703287.

It is an arithmetic number, because the mean of its divisors is an integer number (39974835810).

Almost surely, 2^{1285975191168} is an apocalyptic number.

1285975191168 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1285975191168 is an abundant number, since it is smaller than the sum of its proper divisors (2551609046592).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1285975191168 is an frugal number, since it uses more digits than its factorization.

1285975191168 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41344396 (or 41344372 counting only the distinct ones).

The product of its digits is 10886400, while the sum is 63.

The spelling of 1285975191168 in words is "one trillion, two hundred eighty-five billion, nine hundred seventy-five million, one hundred ninety-one thousand, one hundred sixty-eight".