16543695952 has 60 divisors (see below), whose sum is σ = 37370459700. Its totient is φ = 7074213888.

The previous prime is 16543695937. The next prime is 16543695977. The reversal of 16543695952 is 25959634561.

It can be written as a sum of positive squares in 2 ways, for example, as 8946133056 + 7597562896 = 94584^2 + 87164^2 .

It is a junction number, because it is equal to n+sod(n) for n = 16543695893 and 16543695902.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 328518 + ... + 375514.

It is an arithmetic number, because the mean of its divisors is an integer number (622840995).

Almost surely, 2^16543695952 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16543695952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18685229850).

16543695952 is an abundant number, since it is smaller than the sum of its proper divisors (20826763748).

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

16543695952 is a wasteful number, since it uses less digits than its factorization.

16543695952 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47468 (or 47455 counting only the distinct ones).

The product of its digits is 8748000, while the sum is 55.

The spelling of 16543695952 in words is "sixteen billion, five hundred forty-three million, six hundred ninety-five thousand, nine hundred fifty-two".