18465654737473 has 4 divisors (see below), whose sum is σ = 18481211313840. Its totient is φ = 18450098161108.

The previous prime is 18465654737447. The next prime is 18465654737483. The reversal of 18465654737473 is 37473745656481.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 18465654737473 - 2⁵ = 18465654737441 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18465654737483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7778286403 + ... + 7778288776.

It is an arithmetic number, because the mean of its divisors is an integer number (4620302828460).

Almost surely, 2^{18465654737473} is an apocalyptic number.

It is an amenable number.

18465654737473 is a deficient number, since it is larger than the sum of its proper divisors (15556576367).

18465654737473 is a wasteful number, since it uses less digits than its factorization.

18465654737473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15556576366.

The product of its digits is 1422489600, while the sum is 70.

The spelling of 18465654737473 in words is "eighteen trillion, four hundred sixty-five billion, six hundred fifty-four million, seven hundred thirty-seven thousand, four hundred seventy-three".