21203276748 has 24 divisors (see below), whose sum is σ = 50312861760. Its totient is φ = 6947966160.

The previous prime is 21203276729. The next prime is 21203276749. The reversal of 21203276748 is 84767230212.

It is a happy number.

It is a super-3 number, since 3×21203276748³ (a number of 32 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (21203276749) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 14973358 + ... + 14974773.

It is an arithmetic number, because the mean of its divisors is an integer number (2096369240).

Almost surely, 2^21203276748 is an apocalyptic number.

It is an amenable number.

21203276748 is an abundant number, since it is smaller than the sum of its proper divisors (29109585012).

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

21203276748 is a wasteful number, since it uses less digits than its factorization.

21203276748 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29948197 (or 29948195 counting only the distinct ones).

The product of its (nonzero) digits is 225792, while the sum is 42.

The spelling of 21203276748 in words is "twenty-one billion, two hundred three million, two hundred seventy-six thousand, seven hundred forty-eight".