11641286178 has 12 divisors (see below), whose sum is σ = 25222786758. Its totient is φ = 3880428720.

The previous prime is 11641286161. The next prime is 11641286201. The reversal of 11641286178 is 87168214611.

11641286178 is a `hidden beast` number, since 1 + 1 + 6 + 4 + 1 + 28 + 617 + 8 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9359982009 + 2281304169 = 96747^2 + 47763^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 323369043 + ... + 323369078.

Almost surely, 2^11641286178 is an apocalyptic number.

11641286178 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

11641286178 is an abundant number, since it is smaller than the sum of its proper divisors (13581500580).

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

11641286178 is a wasteful number, since it uses less digits than its factorization.

11641286178 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 646738129 (or 646738126 counting only the distinct ones).

The product of its digits is 129024, while the sum is 45.

The spelling of 11641286178 in words is "eleven billion, six hundred forty-one million, two hundred eighty-six thousand, one hundred seventy-eight".