16540867452 has 12 divisors (see below), whose sum is σ = 38595357416. Its totient is φ = 5513622480.

The previous prime is 16540867433. The next prime is 16540867517. The reversal of 16540867452 is 25476804561.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 689202799 + ... + 689202822.

Almost surely, 2^16540867452 is an apocalyptic number.

16540867452 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

16540867452 is an abundant number, since it is smaller than the sum of its proper divisors (22054489964).

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

16540867452 is a wasteful number, since it uses less digits than its factorization.

16540867452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378405628 (or 1378405626 counting only the distinct ones).

The product of its (nonzero) digits is 1612800, while the sum is 48.

The spelling of 16540867452 in words is "sixteen billion, five hundred forty million, eight hundred sixty-seven thousand, four hundred fifty-two".