21010352304 has 40 divisors (see below), whose sum is σ = 57133416640. Its totient is φ = 6634847808.

The previous prime is 21010352267. The next prime is 21010352347. The reversal of 21010352304 is 40325301012.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11517922 + ... + 11519745.

It is an arithmetic number, because the mean of its divisors is an integer number (1428335416).

Almost surely, 2^21010352304 is an apocalyptic number.

21010352304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21010352304 is an abundant number, since it is smaller than the sum of its proper divisors (36123064336).

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

21010352304 is a wasteful number, since it uses less digits than its factorization.

21010352304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23037697 (or 23037691 counting only the distinct ones).

The product of its (nonzero) digits is 720, while the sum is 21.

Adding to 21010352304 its reverse (40325301012), we get a palindrome (61335653316).

The spelling of 21010352304 in words is "twenty-one billion, ten million, three hundred fifty-two thousand, three hundred four".