20814054464 has 56 divisors (see below), whose sum is σ = 48831032640. Its totient is φ = 8612706816.

The previous prime is 20814054463. The next prime is 20814054467. The reversal of 20814054464 is 46445041802.

It is a tau number, because it is divible by the number of its divisors (56).

It is not an unprimeable number, because it can be changed into a prime (20814054463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 788042 + ... + 814025.

Almost surely, 2^20814054464 is an apocalyptic number.

It is an amenable number.

20814054464 is an abundant number, since it is smaller than the sum of its proper divisors (28016978176).

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

20814054464 is a wasteful number, since it uses less digits than its factorization.

20814054464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1602115 (or 1602105 counting only the distinct ones).

The product of its (nonzero) digits is 122880, while the sum is 38.

The spelling of 20814054464 in words is "twenty billion, eight hundred fourteen million, fifty-four thousand, four hundred sixty-four".