11851969146 has 16 divisors (see below), whose sum is σ = 23706717984. Its totient is φ = 3950193104.

The previous prime is 11851969123. The next prime is 11851969187. The reversal of 11851969146 is 64196915811.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58185 + ... + 164588.

It is an arithmetic number, because the mean of its divisors is an integer number (1481669874).

Almost surely, 2^11851969146 is an apocalyptic number.

11851969146 is an abundant number, since it is smaller than the sum of its proper divisors (11854748838).

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

11851969146 is a wasteful number, since it uses less digits than its factorization.

11851969146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231645.

The product of its digits is 466560, while the sum is 51.

The spelling of 11851969146 in words is "eleven billion, eight hundred fifty-one million, nine hundred sixty-nine thousand, one hundred forty-six".