21236050968 has 64 divisors (see below), whose sum is σ = 58305312000. Its totient is φ = 6391966080.

The previous prime is 21236050921. The next prime is 21236050981. The reversal of 21236050968 is 86905063212.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 230596 + ... + 309267.

It is an arithmetic number, because the mean of its divisors is an integer number (911020500).

Almost surely, 2^21236050968 is an apocalyptic number.

It is an amenable number.

21236050968 is an abundant number, since it is smaller than the sum of its proper divisors (37069261032).

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

21236050968 is a wasteful number, since it uses less digits than its factorization.

21236050968 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 540032 (or 540028 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 21236050968 in words is "twenty-one billion, two hundred thirty-six million, fifty thousand, nine hundred sixty-eight".