21343415750 has 16 divisors (see below), whose sum is σ = 39954874752. Its totient is φ = 8537366200.

The previous prime is 21343415693. The next prime is 21343415761. The reversal of 21343415750 is 5751434312.

It is a self number, because there is not a number n which added to its sum of digits gives 21343415750.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42686582 + ... + 42687081.

It is an arithmetic number, because the mean of its divisors is an integer number (2497179672).

Almost surely, 2^21343415750 is an apocalyptic number.

21343415750 is a deficient number, since it is larger than the sum of its proper divisors (18611459002).

21343415750 is an equidigital number, since it uses as much as digits as its factorization.

21343415750 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85373680 (or 85373670 counting only the distinct ones).

The product of its (nonzero) digits is 50400, while the sum is 35.

The spelling of 21343415750 in words is "twenty-one billion, three hundred forty-three million, four hundred fifteen thousand, seven hundred fifty".