12143891618964 has 54 divisors (see below), whose sum is σ = 35708824170474. Its totient is φ = 3469683319200.

The previous prime is 12143891618933. The next prime is 12143891618981. The reversal of 12143891618964 is 46981619834121.

12143891618964 is a `hidden beast` number, since 1 + 2 + 1 + 4 + 3 + 8 + 9 + 1 + 618 + 9 + 6 + 4 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10780111422864 + 1363780196100 = 3283308^2 + 1167810^2 .

It is a super-4 number, since 4×12143891618964⁴ (a number of 53 digits) contains 4444 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 3442144387 + ... + 3442147914.

Almost surely, 2^{12143891618964} is an apocalyptic number.

12143891618964 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

12143891618964 is an abundant number, since it is smaller than the sum of its proper divisors (23564932551510).

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

12143891618964 is a wasteful number, since it uses less digits than its factorization.

12143891618964 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6884292325 (or 6884292313 counting only the distinct ones).

The product of its digits is 17915904, while the sum is 63.

The spelling of 12143891618964 in words is "twelve trillion, one hundred forty-three billion, eight hundred ninety-one million, six hundred eighteen thousand, nine hundred sixty-four".