16543623460 has 48 divisors (see below), whose sum is σ = 42758908416. Its totient is φ = 5235783552.

The previous prime is 16543623449. The next prime is 16543623461. The reversal of 16543623460 is 6432634561.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (16543623461) 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, 4543132 + ... + 4546771.

It is an arithmetic number, because the mean of its divisors is an integer number (890810592).

Almost surely, 2^16543623460 is an apocalyptic number.

16543623460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

16543623460 is an abundant number, since it is smaller than the sum of its proper divisors (26215284956).

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

16543623460 is a wasteful number, since it uses less digits than its factorization.

16543623460 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9089932 (or 9089930 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 40.

The spelling of 16543623460 in words is "sixteen billion, five hundred forty-three million, six hundred twenty-three thousand, four hundred sixty".