16118943747 has 4 divisors (see below), whose sum is σ = 21491925000. Its totient is φ = 10745962496.

The previous prime is 16118943727. The next prime is 16118943761. The reversal of 16118943747 is 74734981161.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 16118943747 - 2²⁷ = 15984726019 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 16118943747.

It is not an unprimeable number, because it can be changed into a prime (16118943727) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2686490622 + ... + 2686490627.

It is an arithmetic number, because the mean of its divisors is an integer number (5372981250).

Almost surely, 2^16118943747 is an apocalyptic number.

16118943747 is a deficient number, since it is larger than the sum of its proper divisors (5372981253).

16118943747 is an equidigital number, since it uses as much as digits as its factorization.

16118943747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5372981252.

The product of its digits is 1016064, while the sum is 51.

The spelling of 16118943747 in words is "sixteen billion, one hundred eighteen million, nine hundred forty-three thousand, seven hundred forty-seven".