21203362792 has 8 divisors (see below), whose sum is σ = 39756305250. Its totient is φ = 10601681392.

The previous prime is 21203362787. The next prime is 21203362801. The reversal of 21203362792 is 29726330212.

It can be written as a sum of positive squares in only one way, i.e., 10665519076 + 10537843716 = 103274^2 + 102654^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a hoax number, since the sum of its digits (37) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1325210167 + ... + 1325210182.

Almost surely, 2^21203362792 is an apocalyptic number.

It is an amenable number.

21203362792 is a deficient number, since it is larger than the sum of its proper divisors (18552942458).

21203362792 is a wasteful number, since it uses less digits than its factorization.

21203362792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2650420355 (or 2650420351 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 37.

The spelling of 21203362792 in words is "twenty-one billion, two hundred three million, three hundred sixty-two thousand, seven hundred ninety-two".