21365386750 has 32 divisors (see below), whose sum is σ = 40049612928. Its totient is φ = 8534700000.

The previous prime is 21365386697. The next prime is 21365386771. The reversal of 21365386750 is 5768356312.

It is a self number, because there is not a number n which added to its sum of digits gives 21365386750.

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, 130852 + ... + 244648.

It is an arithmetic number, because the mean of its divisors is an integer number (1251550404).

Almost surely, 2^21365386750 is an apocalyptic number.

21365386750 is a deficient number, since it is larger than the sum of its proper divisors (18684226178).

21365386750 is a wasteful number, since it uses less digits than its factorization.

21365386750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114565 (or 114555 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 46.

The spelling of 21365386750 in words is "twenty-one billion, three hundred sixty-five million, three hundred eighty-six thousand, seven hundred fifty".