16218638066524 has 24 divisors (see below), whose sum is σ = 28499480811648. Its totient is φ = 8075948626800.

The previous prime is 16218638066513. The next prime is 16218638066549. The reversal of 16218638066524 is 42566083681261.

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, 933999 + ... + 5771449.

It is an arithmetic number, because the mean of its divisors is an integer number (1187478367152).

Almost surely, 2^{16218638066524} is an apocalyptic number.

It is an amenable number.

16218638066524 is a deficient number, since it is larger than the sum of its proper divisors (12280842745124).

16218638066524 is a wasteful number, since it uses less digits than its factorization.

16218638066524 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4840905 (or 4840903 counting only the distinct ones).

The product of its (nonzero) digits is 19906560, while the sum is 58.

The spelling of 16218638066524 in words is "sixteen trillion, two hundred eighteen billion, six hundred thirty-eight million, sixty-six thousand, five hundred twenty-four".