21303540662 has 4 divisors (see below), whose sum is σ = 31955310996. Its totient is φ = 10651770330.

The previous prime is 21303540637. The next prime is 21303540691. The reversal of 21303540662 is 26604530312.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5325885164 + ... + 5325885167.

It is an arithmetic number, because the mean of its divisors is an integer number (7988827749).

Almost surely, 2^21303540662 is an apocalyptic number.

21303540662 is a deficient number, since it is larger than the sum of its proper divisors (10651770334).

21303540662 is a wasteful number, since it uses less digits than its factorization.

21303540662 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10651770333.

The product of its (nonzero) digits is 25920, while the sum is 32.

The spelling of 21303540662 in words is "twenty-one billion, three hundred three million, five hundred forty thousand, six hundred sixty-two".