13623021730 has 16 divisors (see below), whose sum is σ = 25367006520. Its totient is φ = 5261304832.

The previous prime is 13623021691. The next prime is 13623021767. The reversal of 13623021730 is 3712032631.

It can be written as a sum of positive squares in 4 ways, for example, as 13143017449 + 480004281 = 114643^2 + 21909^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23487679 + ... + 23488258.

Almost surely, 2^13623021730 is an apocalyptic number.

13623021730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

13623021730 is a deficient number, since it is larger than the sum of its proper divisors (11743984790).

13623021730 is a wasteful number, since it uses less digits than its factorization.

13623021730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46975973.

The product of its (nonzero) digits is 4536, while the sum is 28.

The spelling of 13623021730 in words is "thirteen billion, six hundred twenty-three million, twenty-one thousand, seven hundred thirty".