21715102731310 has 8 divisors (see below), whose sum is σ = 39087184916376. Its totient is φ = 8686041092520.

The previous prime is 21715102731293. The next prime is 21715102731359. The reversal of 21715102731310 is 1313720151712.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×21715102731310² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1085755136556 + ... + 1085755136575.

It is an arithmetic number, because the mean of its divisors is an integer number (4885898114547).

Almost surely, 2^{21715102731310} is an apocalyptic number.

21715102731310 is a deficient number, since it is larger than the sum of its proper divisors (17372082185066).

21715102731310 is a wasteful number, since it uses less digits than its factorization.

21715102731310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2171510273138.

The product of its (nonzero) digits is 8820, while the sum is 34.

The spelling of 21715102731310 in words is "twenty-one trillion, seven hundred fifteen billion, one hundred two million, seven hundred thirty-one thousand, three hundred ten".