21703190880 has 96 divisors (see below), whose sum is σ = 78131499264. Its totient is φ = 4960728576.

The previous prime is 21703190837. The next prime is 21703190881. The reversal of 21703190880 is 8809130712.

It is a tau number, because it is divible by the number of its divisors (96).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21703190881) 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, 3226282 + ... + 3233001.

It is an arithmetic number, because the mean of its divisors is an integer number (813869784).

Almost surely, 2^21703190880 is an apocalyptic number.

21703190880 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21703190880 is an abundant number, since it is smaller than the sum of its proper divisors (56428308384).

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

21703190880 is a wasteful number, since it uses less digits than its factorization.

21703190880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6459308 (or 6459300 counting only the distinct ones).

The product of its (nonzero) digits is 24192, while the sum is 39.

The spelling of 21703190880 in words is "twenty-one billion, seven hundred three million, one hundred ninety thousand, eight hundred eighty".