18572312473 has 24 divisors (see below), whose sum is σ = 23178254400. Its totient is φ = 14668350720.

The previous prime is 18572312459. The next prime is 18572312503. The reversal of 18572312473 is 37421327581.

It is a de Polignac number, because none of the positive numbers 2^k-18572312473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18572312453) 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 in 23 ways as a sum of consecutive naturals, for example, 183373 + ... + 266026.

It is an arithmetic number, because the mean of its divisors is an integer number (965760600).

Almost surely, 2^18572312473 is an apocalyptic number.

18572312473 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

18572312473 is a deficient number, since it is larger than the sum of its proper divisors (4605941927).

18572312473 is a wasteful number, since it uses less digits than its factorization.

18572312473 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 449457 (or 449440 counting only the distinct ones).

The product of its digits is 282240, while the sum is 43.

The spelling of 18572312473 in words is "eighteen billion, five hundred seventy-two million, three hundred twelve thousand, four hundred seventy-three".