2143860400018 has 16 divisors (see below), whose sum is σ = 3219056643960. Its totient is φ = 1070841839616.

The previous prime is 2143860399953. The next prime is 2143860400021. The reversal of 2143860400018 is 8100040683412.

It can be written as a sum of positive squares in 4 ways, for example, as 2123848619649 + 20011780369 = 1457343^2 + 141463^2 .

It is a super-2 number, since 2×2143860400018² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2143860400018.

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, 13898098 + ... + 14051506.

Almost surely, 2^{2143860400018} is an apocalyptic number.

2143860400018 is a deficient number, since it is larger than the sum of its proper divisors (1075196243942).

2143860400018 is a wasteful number, since it uses less digits than its factorization.

2143860400018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 160461.

The product of its (nonzero) digits is 36864, while the sum is 37.

The spelling of 2143860400018 in words is "two trillion, one hundred forty-three billion, eight hundred sixty million, four hundred thousand, eighteen".