21304103774 has 32 divisors (see below), whose sum is σ = 33487829760. Its totient is φ = 10152345600.

The previous prime is 21304103747. The next prime is 21304103803. The reversal of 21304103774 is 47730140312.

It is a super-2 number, since 2×21304103774² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 21304103774.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3477434 + ... + 3483554.

It is an arithmetic number, because the mean of its divisors is an integer number (1046494680).

Almost surely, 2^21304103774 is an apocalyptic number.

21304103774 is a deficient number, since it is larger than the sum of its proper divisors (12183725986).

21304103774 is a wasteful number, since it uses less digits than its factorization.

21304103774 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6996.

The product of its (nonzero) digits is 14112, while the sum is 32.

The spelling of 21304103774 in words is "twenty-one billion, three hundred four million, one hundred three thousand, seven hundred seventy-four".