11945664912 has 40 divisors (see below), whose sum is σ = 31441898304. Its totient is φ = 3906757504.

The previous prime is 11945664893. The next prime is 11945664917. The reversal of 11945664912 is 21946654911.

It is a hoax number, since the sum of its digits (48) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is not an unprimeable number, because it can be changed into a prime (11945664917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2345268 + ... + 2350355.

Almost surely, 2^11945664912 is an apocalyptic number.

11945664912 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

11945664912 is an abundant number, since it is smaller than the sum of its proper divisors (19496233392).

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

11945664912 is a wasteful number, since it uses less digits than its factorization.

11945664912 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4695687 (or 4695681 counting only the distinct ones).

The product of its digits is 466560, while the sum is 48.

The spelling of 11945664912 in words is "eleven billion, nine hundred forty-five million, six hundred sixty-four thousand, nine hundred twelve".