18057541647 has 16 divisors (see below), whose sum is σ = 24734844288. Its totient is φ = 11711532000.

The previous prime is 18057541603. The next prime is 18057541693. The reversal of 18057541647 is 74614575081.

It is not a de Polignac number, because 18057541647 - 2⁸ = 18057541391 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18057541596 and 18057541605.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18057541147) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 246468 + ... + 311225.

It is an arithmetic number, because the mean of its divisors is an integer number (1545927768).

Almost surely, 2^18057541647 is an apocalyptic number.

18057541647 is a deficient number, since it is larger than the sum of its proper divisors (6677302641).

18057541647 is a wasteful number, since it uses less digits than its factorization.

18057541647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 557990.

The product of its (nonzero) digits is 940800, while the sum is 48.

It can be divided in two parts, 180575 and 41647, that added together give a palindrome (222222).

The spelling of 18057541647 in words is "eighteen billion, fifty-seven million, five hundred forty-one thousand, six hundred forty-seven".