20046334649 has 8 divisors (see below), whose sum is σ = 21939966048. Its totient is φ = 18164576160.

The previous prime is 20046334639. The next prime is 20046334663. The reversal of 20046334649 is 94643364002.

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

It is a cyclic number.

It is not a de Polignac number, because 20046334649 - 2²⁰ = 20045286073 is a prime.

It is not an unprimeable number, because it can be changed into a prime (20046334619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2964692 + ... + 2971445.

It is an arithmetic number, because the mean of its divisors is an integer number (2742495756).

Almost surely, 2^20046334649 is an apocalyptic number.

It is an amenable number.

20046334649 is a deficient number, since it is larger than the sum of its proper divisors (1893631399).

20046334649 is a wasteful number, since it uses less digits than its factorization.

20046334649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5936455.

The product of its (nonzero) digits is 373248, while the sum is 41.

The spelling of 20046334649 in words is "twenty billion, forty-six million, three hundred thirty-four thousand, six hundred forty-nine".