193620421356 has 12 divisors (see below), whose sum is σ = 451780983192. Its totient is φ = 64540140448.

The previous prime is 193620421349. The next prime is 193620421361. The reversal of 193620421356 is 653124026391.

193620421356 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (12).

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 3 ways as a sum of consecutive naturals, for example, 8067517545 + ... + 8067517568.

It is an arithmetic number, because the mean of its divisors is an integer number (37648415266).

Almost surely, 2^193620421356 is an apocalyptic number.

It is an amenable number.

193620421356 is an abundant number, since it is smaller than the sum of its proper divisors (258160561836).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

193620421356 is a wasteful number, since it uses less digits than its factorization.

193620421356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16135035120 (or 16135035118 counting only the distinct ones).

The product of its (nonzero) digits is 233280, while the sum is 42.

The spelling of 193620421356 in words is "one hundred ninety-three billion, six hundred twenty million, four hundred twenty-one thousand, three hundred fifty-six".