20312735630 has 64 divisors (see below), whose sum is σ = 40362105600. Its totient is φ = 7298968320.

The previous prime is 20312735623. The next prime is 20312735693. The reversal of 20312735630 is 3653721302.

It is a Curzon number.

It is a congruent number.

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 31 ways as a sum of consecutive naturals, for example, 3206306 + ... + 3212634.

It is an arithmetic number, because the mean of its divisors is an integer number (630657900).

Almost surely, 2^20312735630 is an apocalyptic number.

20312735630 is a deficient number, since it is larger than the sum of its proper divisors (20049369970).

20312735630 is a wasteful number, since it uses less digits than its factorization.

20312735630 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6689.

The product of its (nonzero) digits is 22680, while the sum is 32.

The spelling of 20312735630 in words is "twenty billion, three hundred twelve million, seven hundred thirty-five thousand, six hundred thirty".