12456784073 has 16 divisors (see below), whose sum is σ = 12958133760. Its totient is φ = 11966808000.

The previous prime is 12456784037. The next prime is 12456784111. The reversal of 12456784073 is 37048765421.

It is a cyclic number.

It is not a de Polignac number, because 12456784073 - 2¹⁶ = 12456718537 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (47).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12456784273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 756023 + ... + 772323.

It is an arithmetic number, because the mean of its divisors is an integer number (809883360).

Almost surely, 2^12456784073 is an apocalyptic number.

It is an amenable number.

12456784073 is a deficient number, since it is larger than the sum of its proper divisors (501349687).

12456784073 is a wasteful number, since it uses less digits than its factorization.

12456784073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16648.

The product of its (nonzero) digits is 1128960, while the sum is 47.

The spelling of 12456784073 in words is "twelve billion, four hundred fifty-six million, seven hundred eighty-four thousand, seventy-three".