13621653406 has 8 divisors (see below), whose sum is σ = 20437673904. Its totient is φ = 6809095440.

The previous prime is 13621653403. The next prime is 13621653407. The reversal of 13621653406 is 60435612631.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13621653403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 855775 + ... + 871546.

It is an arithmetic number, because the mean of its divisors is an integer number (2554709238).

Almost surely, 2^13621653406 is an apocalyptic number.

13621653406 is a deficient number, since it is larger than the sum of its proper divisors (6816020498).

13621653406 is a wasteful number, since it uses less digits than its factorization.

13621653406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1731266.

The product of its (nonzero) digits is 77760, while the sum is 37.

The spelling of 13621653406 in words is "thirteen billion, six hundred twenty-one million, six hundred fifty-three thousand, four hundred six".