21303153730 has 32 divisors (see below), whose sum is σ = 41465177856. Its totient is φ = 7849369344.

The previous prime is 21303153721. The next prime is 21303153733. The reversal of 21303153730 is 3735130312.

It is not an unprimeable number, because it can be changed into a prime (21303153733) 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, 1325124 + ... + 1341103.

It is an arithmetic number, because the mean of its divisors is an integer number (1295786808).

Almost surely, 2^21303153730 is an apocalyptic number.

21303153730 is a deficient number, since it is larger than the sum of its proper divisors (20162024126).

21303153730 is a wasteful number, since it uses less digits than its factorization.

21303153730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2666298.

The product of its (nonzero) digits is 5670, while the sum is 28.

The spelling of 21303153730 in words is "twenty-one billion, three hundred three million, one hundred fifty-three thousand, seven hundred thirty".