16406538276 has 12 divisors (see below), whose sum is σ = 38281922672. Its totient is φ = 5468846088.

The previous prime is 16406538259. The next prime is 16406538277. The reversal of 16406538276 is 67283560461.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (16406538277) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 683605750 + ... + 683605773.

Almost surely, 2^16406538276 is an apocalyptic number.

It is an amenable number.

16406538276 is an abundant number, since it is smaller than the sum of its proper divisors (21875384396).

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

16406538276 is a wasteful number, since it uses less digits than its factorization.

16406538276 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1367211530 (or 1367211528 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 48.

The spelling of 16406538276 in words is "sixteen billion, four hundred six million, five hundred thirty-eight thousand, two hundred seventy-six".