18435300353481 has 48 divisors (see below), whose sum is σ = 28169864755200. Its totient is φ = 10702693774080.

The previous prime is 18435300353413. The next prime is 18435300353513.

18435300353481 is nontrivially palindromic in base 10.

It is not a de Polignac number, because 18435300353481 - 2²² = 18435296159177 is a prime.

It is a super-2 number, since 2×18435300353481² (a number of 27 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 18435300353481.

It is not an unprimeable number, because it can be changed into a prime (18435300354481) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 5557716 + ... + 8231573.

It is an arithmetic number, because the mean of its divisors is an integer number (586872182400).

Almost surely, 2^{18435300353481} is an apocalyptic number.

18435300353481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

18435300353481 is a deficient number, since it is larger than the sum of its proper divisors (9734564401719).

18435300353481 is a wasteful number, since it uses less digits than its factorization.

18435300353481 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13789470 (or 13789459 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 48.

It can be divided in two parts, 18435300 and 353481, that added together give a palindrome (18788781).

The spelling of 18435300353481 in words is "eighteen trillion, four hundred thirty-five billion, three hundred million, three hundred fifty-three thousand, four hundred eighty-one".