20620620666602 has 32 divisors (see below), whose sum is σ = 35519556196800. Its totient is φ = 8879497171200.

The previous prime is 20620620666599. The next prime is 20620620666617. The reversal of 20620620666602 is 20666602602602.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19284674 + ... + 20325842.

It is an arithmetic number, because the mean of its divisors is an integer number (1109986131150).

Almost surely, 2^{20620620666602} is an apocalyptic number.

20620620666602 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

20620620666602 is a deficient number, since it is larger than the sum of its proper divisors (14898935530198).

20620620666602 is a wasteful number, since it uses less digits than its factorization.

20620620666602 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1088582.

The product of its (nonzero) digits is 746496, while the sum is 44.

The spelling of 20620620666602 in words is "twenty trillion, six hundred twenty billion, six hundred twenty million, six hundred sixty-six thousand, six hundred two".