18015406249486 has 32 divisors (see below), whose sum is σ = 27552508227360. Its totient is φ = 8831480146944.

The previous prime is 18015406249481. The next prime is 18015406249499. The reversal of 18015406249486 is 68494260451081.

It is a self number, because there is not a number n which added to its sum of digits gives 18015406249486.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18015406249481) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1390822386 + ... + 1390835338.

It is an arithmetic number, because the mean of its divisors is an integer number (861015882105).

Almost surely, 2^{18015406249486} is an apocalyptic number.

18015406249486 is a deficient number, since it is larger than the sum of its proper divisors (9537101977874).

18015406249486 is a wasteful number, since it uses less digits than its factorization.

18015406249486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21300.

The product of its (nonzero) digits is 13271040, while the sum is 58.

The spelling of 18015406249486 in words is "eighteen trillion, fifteen billion, four hundred six million, two hundred forty-nine thousand, four hundred eighty-six".