20120817846 has 16 divisors (see below), whose sum is σ = 40320702000. Its totient is φ = 6693761568.

The previous prime is 20120817839. The next prime is 20120817859. The reversal of 20120817846 is 64871802102.

It is a happy number.

It is a congruent 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, 3291121 + ... + 3297228.

It is an arithmetic number, because the mean of its divisors is an integer number (2520043875).

Almost surely, 2^20120817846 is an apocalyptic number.

20120817846 is an abundant number, since it is smaller than the sum of its proper divisors (20199884154).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20120817846 is a wasteful number, since it uses less digits than its factorization.

20120817846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6588863.

The product of its (nonzero) digits is 43008, while the sum is 39.

The spelling of 20120817846 in words is "twenty billion, one hundred twenty million, eight hundred seventeen thousand, eight hundred forty-six".