16273668787 has 4 divisors (see below), whose sum is σ = 16274135176. Its totient is φ = 16273202400.

The previous prime is 16273668769. The next prime is 16273668799. The reversal of 16273668787 is 78786637261.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 78786637261 = 19 ⋅4146665119.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16273668787 is a prime.

It is a super-3 number, since 3×16273668787³ (a number of 32 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16273668287) 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, 176214 + ... + 252187.

It is an arithmetic number, because the mean of its divisors is an integer number (4068533794).

Almost surely, 2^16273668787 is an apocalyptic number.

16273668787 is a deficient number, since it is larger than the sum of its proper divisors (466389).

16273668787 is an equidigital number, since it uses as much as digits as its factorization.

16273668787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 466388.

The product of its digits is 28449792, while the sum is 61.

The spelling of 16273668787 in words is "sixteen billion, two hundred seventy-three million, six hundred sixty-eight thousand, seven hundred eighty-seven".