16440073787 has 2 divisors, whose sum is σ = 16440073788. Its totient is φ = 16440073786.

The previous prime is 16440073757. The next prime is 16440073799. The reversal of 16440073787 is 78737004461.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 16440073787 - 2³⁰ = 15366331963 is a prime.

It is a super-3 number, since 3×16440073787³ (a number of 32 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (16440073717) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8220036893 + 8220036894.

It is an arithmetic number, because the mean of its divisors is an integer number (8220036894).

Almost surely, 2^16440073787 is an apocalyptic number.

16440073787 is a deficient number, since it is larger than the sum of its proper divisors (1).

16440073787 is an equidigital number, since it uses as much as digits as its factorization.

16440073787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 790272, while the sum is 47.

The spelling of 16440073787 in words is "sixteen billion, four hundred forty million, seventy-three thousand, seven hundred eighty-seven".