21715364306370 has 384 divisors, whose sum is σ = 65028585494016. Its totient is φ = 4615327309824.

The previous prime is 21715364306353. The next prime is 21715364306387. The reversal of 21715364306370 is 7360346351712.

It is an interprime number because it is at equal distance from previous prime (21715364306353) and next prime (21715364306387).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 191 ways as a sum of consecutive naturals, for example, 1547442874 + ... + 1547456906.

It is an arithmetic number, because the mean of its divisors is an integer number (169345274724).

Almost surely, 2^{21715364306370} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 21715364306370, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32514292747008).

21715364306370 is an abundant number, since it is smaller than the sum of its proper divisors (43313221187646).

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

21715364306370 is a wasteful number, since it uses less digits than its factorization.

21715364306370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15354 (or 15347 counting only the distinct ones).

The product of its (nonzero) digits is 1905120, while the sum is 48.

The spelling of 21715364306370 in words is "twenty-one trillion, seven hundred fifteen billion, three hundred sixty-four million, three hundred six thousand, three hundred seventy".