18506553046 has 16 divisors (see below), whose sum is σ = 28086660000. Its totient is φ = 9144957888.

The previous prime is 18506553031. The next prime is 18506553053. The reversal of 18506553046 is 64035560581.

It is a junction number, because it is equal to n+sod(n) for n = 18506552993 and 18506553011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96735 + ... + 215338.

It is an arithmetic number, because the mean of its divisors is an integer number (1755416250).

Almost surely, 2^18506553046 is an apocalyptic number.

18506553046 is a deficient number, since it is larger than the sum of its proper divisors (9580106954).

18506553046 is a wasteful number, since it uses less digits than its factorization.

18506553046 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312423.

The product of its (nonzero) digits is 432000, while the sum is 43.

The spelling of 18506553046 in words is "eighteen billion, five hundred six million, five hundred fifty-three thousand, forty-six".