20046334648 has 8 divisors (see below), whose sum is σ = 37586877480. Its totient is φ = 10023167320.

The previous prime is 20046334639. The next prime is 20046334663. The reversal of 20046334648 is 84643364002.

It is a tau number, because it is divible by the number of its divisors (8).

It is a self number, because there is not a number n which added to its sum of digits gives 20046334648.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1252895908 + ... + 1252895923.

It is an arithmetic number, because the mean of its divisors is an integer number (4698359685).

Almost surely, 2^20046334648 is an apocalyptic number.

It is an amenable number.

20046334648 is a deficient number, since it is larger than the sum of its proper divisors (17540542832).

20046334648 is a wasteful number, since it uses less digits than its factorization.

20046334648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2505791837 (or 2505791833 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 40.

The spelling of 20046334648 in words is "twenty billion, forty-six million, three hundred thirty-four thousand, six hundred forty-eight".