21116620071710 has 16 divisors (see below), whose sum is σ = 38010213471456. Its totient is φ = 8446581952608.

The previous prime is 21116620071691. The next prime is 21116620071727. The reversal of 21116620071710 is 1717002661112.

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, 6906722 + ... + 9483461.

It is an arithmetic number, because the mean of its divisors is an integer number (2375638341966).

Almost surely, 2^{21116620071710} is an apocalyptic number.

21116620071710 is a deficient number, since it is larger than the sum of its proper divisors (16893593399746).

21116620071710 is a wasteful number, since it uses less digits than its factorization.

21116620071710 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16519027.

The product of its (nonzero) digits is 7056, while the sum is 35.

The spelling of 21116620071710 in words is "twenty-one trillion, one hundred sixteen billion, six hundred twenty million, seventy-one thousand, seven hundred ten".