16542002646 has 48 divisors (see below), whose sum is σ = 38608040016. Its totient is φ = 5088523968.

The previous prime is 16542002627. The next prime is 16542002647. The reversal of 16542002646 is 64620024561.

16542002646 is a `hidden beast` number, since 1 + 6 + 5 + 4 + 2 + 0 + 0 + 2 + 646 = 666.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 16542002646.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16542002647) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1276576 + ... + 1289468.

It is an arithmetic number, because the mean of its divisors is an integer number (804334167).

Almost surely, 2^16542002646 is an apocalyptic number.

16542002646 is an abundant number, since it is smaller than the sum of its proper divisors (22066037370).

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

16542002646 is a wasteful number, since it uses less digits than its factorization.

16542002646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18397 (or 18394 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 36.

The spelling of 16542002646 in words is "sixteen billion, five hundred forty-two million, two thousand, six hundred forty-six".