16539212560 has 80 divisors (see below), whose sum is σ = 41798949696. Its totient is φ = 6049672704.

The previous prime is 16539212551. The next prime is 16539212563. The reversal of 16539212560 is 6521293561.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is not an unprimeable number, because it can be changed into a prime (16539212563) 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, 36967 + ... + 185593.

Almost surely, 2^16539212560 is an apocalyptic number.

16539212560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16539212560, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20899474848).

16539212560 is an abundant number, since it is smaller than the sum of its proper divisors (25259737136).

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

16539212560 is a wasteful number, since it uses less digits than its factorization.

16539212560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148760 (or 148754 counting only the distinct ones).

The product of its (nonzero) digits is 97200, while the sum is 40.

The spelling of 16539212560 in words is "sixteen billion, five hundred thirty-nine million, two hundred twelve thousand, five hundred sixty".