20436660546 has 8 divisors (see below), whose sum is σ = 40873321104. Its totient is φ = 6812220180.

The previous prime is 20436660533. The next prime is 20436660553. The reversal of 20436660546 is 64506663402.

It is a sphenic number, since it is the product of 3 distinct primes.

20436660546 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 20436660498 and 20436660507.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1703055040 + ... + 1703055051.

It is an arithmetic number, because the mean of its divisors is an integer number (5109165138).

Almost surely, 2^20436660546 is an apocalyptic number.

20436660546 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

20436660546 is a wasteful number, since it uses less digits than its factorization.

20436660546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3406110096.

The product of its (nonzero) digits is 622080, while the sum is 42.

The spelling of 20436660546 in words is "twenty billion, four hundred thirty-six million, six hundred sixty thousand, five hundred forty-six".