20710705215 has 16 divisors (see below), whose sum is σ = 34206068736. Its totient is φ = 10689396000.

The previous prime is 20710705123. The next prime is 20710705271. The reversal of 20710705215 is 51250701702.

It is not a de Polignac number, because 20710705215 - 2¹⁰ = 20710704191 is a prime.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 22269111 + ... + 22270040.

It is an arithmetic number, because the mean of its divisors is an integer number (2137879296).

Almost surely, 2^20710705215 is an apocalyptic number.

20710705215 is a deficient number, since it is larger than the sum of its proper divisors (13495363521).

20710705215 is a wasteful number, since it uses less digits than its factorization.

20710705215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44539190.

The product of its (nonzero) digits is 4900, while the sum is 30.

The spelling of 20710705215 in words is "twenty billion, seven hundred ten million, seven hundred five thousand, two hundred fifteen".