2166043112454 has 64 divisors (see below), whose sum is σ = 4999735931904. Its totient is φ = 620267953536.

The previous prime is 2166043112423. The next prime is 2166043112473. The reversal of 2166043112454 is 4542113406612.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 16249594 + ... + 16382349.

It is an arithmetic number, because the mean of its divisors is an integer number (78120873936).

Almost surely, 2^{2166043112454} is an apocalyptic number.

2166043112454 is an abundant number, since it is smaller than the sum of its proper divisors (2833692819450).

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

2166043112454 is a wasteful number, since it uses less digits than its factorization.

2166043112454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32632021.

The product of its (nonzero) digits is 138240, while the sum is 39.

The spelling of 2166043112454 in words is "two trillion, one hundred sixty-six billion, forty-three million, one hundred twelve thousand, four hundred fifty-four".