20646425532706 has 16 divisors (see below), whose sum is σ = 31085103749760. Its totient is φ = 10284725114640.

The previous prime is 20646425532653. The next prime is 20646425532713. The reversal of 20646425532706 is 60723552464602.

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, 74335111 + ... + 74612341.

It is an arithmetic number, because the mean of its divisors is an integer number (1942818984360).

Almost surely, 2^{20646425532706} is an apocalyptic number.

20646425532706 is a deficient number, since it is larger than the sum of its proper divisors (10438678217054).

20646425532706 is a wasteful number, since it uses less digits than its factorization.

20646425532706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 415929.

The product of its (nonzero) digits is 14515200, while the sum is 52.

The spelling of 20646425532706 in words is "twenty trillion, six hundred forty-six billion, four hundred twenty-five million, five hundred thirty-two thousand, seven hundred six".