20846634846 has 32 divisors (see below), whose sum is σ = 44894062080. Its totient is φ = 6429269376.

The previous prime is 20846634803. The next prime is 20846634899. The reversal of 20846634846 is 64843664802.

It is a super-2 number, since 2×20846634846² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a congruent number.

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, 1726006 + ... + 1738041.

It is an arithmetic number, because the mean of its divisors is an integer number (1402939440).

Almost surely, 2^20846634846 is an apocalyptic number.

20846634846 is an abundant number, since it is smaller than the sum of its proper divisors (24047427234).

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

20846634846 is a wasteful number, since it uses less digits than its factorization.

20846634846 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3464128.

The product of its (nonzero) digits is 5308416, while the sum is 51.

The spelling of 20846634846 in words is "twenty billion, eight hundred forty-six million, six hundred thirty-four thousand, eight hundred forty-six".