21203276750 has 16 divisors (see below), whose sum is σ = 39692534544. Its totient is φ = 8481310600.

The previous prime is 21203276749. The next prime is 21203276753. The reversal of 21203276750 is 5767230212.

It is a self number, because there is not a number n which added to its sum of digits gives 21203276750.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21203276753) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42406304 + ... + 42406803.

It is an arithmetic number, because the mean of its divisors is an integer number (2480783409).

Almost surely, 2^21203276750 is an apocalyptic number.

21203276750 is a deficient number, since it is larger than the sum of its proper divisors (18489257794).

21203276750 is an equidigital number, since it uses as much as digits as its factorization.

21203276750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84813124 (or 84813114 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 35.

The spelling of 21203276750 in words is "twenty-one billion, two hundred three million, two hundred seventy-six thousand, seven hundred fifty".