18477463653 has 96 divisors (see below), whose sum is σ = 31147484160. Its totient is φ = 10437880320.

The previous prime is 18477463649. The next prime is 18477463673. The reversal of 18477463653 is 35636477481.

It is a happy number.

It is not a de Polignac number, because 18477463653 - 2² = 18477463649 is a prime.

It is a super-2 number, since 2×18477463653² (a number of 21 digits) contains 22 as substring.

Its product of digits (10160640) is a multiple of the sum of its prime divisors (756).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 18477463653.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18477463673) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 54829101 + ... + 54829437.

It is an arithmetic number, because the mean of its divisors is an integer number (324452960).

Almost surely, 2^18477463653 is an apocalyptic number.

It is an amenable number.

18477463653 is a deficient number, since it is larger than the sum of its proper divisors (12670020507).

18477463653 is a wasteful number, since it uses less digits than its factorization.

18477463653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 759 (or 756 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 54.

The spelling of 18477463653 in words is "eighteen billion, four hundred seventy-seven million, four hundred sixty-three thousand, six hundred fifty-three".