21268051440304 has 40 divisors (see below), whose sum is σ = 41220027999360. Its totient is φ = 10630625499648.

The previous prime is 21268051440301. The next prime is 21268051440347. The reversal of 21268051440304 is 40304415086212.

It is a happy number.

It is a super-2 number, since 2×21268051440304² (a number of 27 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (21268051440301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 842987562 + ... + 843012790.

It is an arithmetic number, because the mean of its divisors is an integer number (1030500699984).

Almost surely, 2^{21268051440304} is an apocalyptic number.

It is an amenable number.

21268051440304 is a deficient number, since it is larger than the sum of its proper divisors (19951976559056).

21268051440304 is a wasteful number, since it uses less digits than its factorization.

21268051440304 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39997 (or 39991 counting only the distinct ones).

The product of its (nonzero) digits is 184320, while the sum is 40.

The spelling of 21268051440304 in words is "twenty-one trillion, two hundred sixty-eight billion, fifty-one million, four hundred forty thousand, three hundred four".