21330710170 has 128 divisors (see below), whose sum is σ = 49659609600. Its totient is φ = 6401203200.

The previous prime is 21330710059. The next prime is 21330710231. The reversal of 21330710170 is 7101703312.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9399796 + ... + 9402064.

It is an arithmetic number, because the mean of its divisors is an integer number (387965700).

Almost surely, 2^21330710170 is an apocalyptic number.

21330710170 is an abundant number, since it is smaller than the sum of its proper divisors (28328899430).

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

21330710170 is a wasteful number, since it uses less digits than its factorization.

21330710170 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2744.

The product of its (nonzero) digits is 882, while the sum is 25.

The spelling of 21330710170 in words is "twenty-one billion, three hundred thirty million, seven hundred ten thousand, one hundred seventy".