21101546832 has 80 divisors (see below), whose sum is σ = 58072949760. Its totient is φ = 6583337856.

The previous prime is 21101546797. The next prime is 21101546833. The reversal of 21101546832 is 23864510112.

It is a junction number, because it is equal to n+sod(n) for n = 21101546793 and 21101546802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21101546833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 63688 + ... + 215079.

It is an arithmetic number, because the mean of its divisors is an integer number (725911872).

Almost surely, 2^21101546832 is an apocalyptic number.

It is an amenable number.

21101546832 is an abundant number, since it is smaller than the sum of its proper divisors (36971402928).

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

21101546832 is a wasteful number, since it uses less digits than its factorization.

21101546832 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 278880 (or 278874 counting only the distinct ones).

The product of its (nonzero) digits is 11520, while the sum is 33.

The spelling of 21101546832 in words is "twenty-one billion, one hundred one million, five hundred forty-six thousand, eight hundred thirty-two".