18016519515486 has 32 divisors (see below), whose sum is σ = 37007172511008. Its totient is φ = 5843153272320.

The previous prime is 18016519515413. The next prime is 18016519515539. The reversal of 18016519515486 is 68451591561081.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 49384866 + ... + 49748346.

It is an arithmetic number, because the mean of its divisors is an integer number (1156474140969).

Almost surely, 2^{18016519515486} is an apocalyptic number.

18016519515486 is an abundant number, since it is smaller than the sum of its proper divisors (18990652995522).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18016519515486 is a wasteful number, since it uses less digits than its factorization.

18016519515486 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 586796.

The product of its (nonzero) digits is 10368000, while the sum is 60.

The spelling of 18016519515486 in words is "eighteen trillion, sixteen billion, five hundred nineteen million, five hundred fifteen thousand, four hundred eighty-six".