20711260662664 has 64 divisors (see below), whose sum is σ = 45645557711040. Its totient is φ = 8685686933760.

The previous prime is 20711260662623. The next prime is 20711260662671. The reversal of 20711260662664 is 46626606211702.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2248294 + ... + 6817429.

It is an arithmetic number, because the mean of its divisors is an integer number (713211839235).

Almost surely, 2^{20711260662664} is an apocalyptic number.

It is an amenable number.

20711260662664 is an abundant number, since it is smaller than the sum of its proper divisors (24934297048376).

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

20711260662664 is a wasteful number, since it uses less digits than its factorization.

20711260662664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9067750 (or 9067746 counting only the distinct ones).

The product of its (nonzero) digits is 1741824, while the sum is 49.

The spelling of 20711260662664 in words is "twenty trillion, seven hundred eleven billion, two hundred sixty million, six hundred sixty-two thousand, six hundred sixty-four".