20620535630 has 32 divisors (see below), whose sum is σ = 37830893184. Its totient is φ = 8089675776.

The previous prime is 20620535569. The next prime is 20620535657. The reversal of 20620535630 is 3653502602.

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, 2021102 + ... + 2031278.

It is an arithmetic number, because the mean of its divisors is an integer number (1182215412).

Almost surely, 2^20620535630 is an apocalyptic number.

20620535630 is a deficient number, since it is larger than the sum of its proper divisors (17210357554).

20620535630 is a wasteful number, since it uses less digits than its factorization.

20620535630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14060.

The product of its (nonzero) digits is 32400, while the sum is 32.

The spelling of 20620535630 in words is "twenty billion, six hundred twenty million, five hundred thirty-five thousand, six hundred thirty".