16506551676 has 48 divisors (see below), whose sum is σ = 40791250080. Its totient is φ = 5177210880.

The previous prime is 16506551671. The next prime is 16506551689. The reversal of 16506551676 is 67615560561.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16506551671) 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, 1075416 + ... + 1090656.

It is an arithmetic number, because the mean of its divisors is an integer number (849817710).

Almost surely, 2^16506551676 is an apocalyptic number.

It is an amenable number.

16506551676 is an abundant number, since it is smaller than the sum of its proper divisors (24284698404).

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

16506551676 is a wasteful number, since it uses less digits than its factorization.

16506551676 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20574 (or 20572 counting only the distinct ones).

The product of its (nonzero) digits is 1134000, while the sum is 48.

The spelling of 16506551676 in words is "sixteen billion, five hundred six million, five hundred fifty-one thousand, six hundred seventy-six".