20346842636 has 24 divisors (see below), whose sum is σ = 37318821120. Its totient is φ = 9688220432.

The previous prime is 20346842603. The next prime is 20346842701. The reversal of 20346842636 is 63624864302.

It is a happy number.

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, 466256 + ... + 508023.

It is an arithmetic number, because the mean of its divisors is an integer number (1554950880).

Almost surely, 2^20346842636 is an apocalyptic number.

It is an amenable number.

20346842636 is a deficient number, since it is larger than the sum of its proper divisors (16971978484).

20346842636 is a wasteful number, since it uses less digits than its factorization.

20346842636 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974533 (or 974531 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 44.

The spelling of 20346842636 in words is "twenty billion, three hundred forty-six million, eight hundred forty-two thousand, six hundred thirty-six".