20004543694480 has 40 divisors (see below), whose sum is σ = 46539470892600. Its totient is φ = 7996844264448.

The previous prime is 20004543694391. The next prime is 20004543694493. The reversal of 20004543694480 is 8449634540002.

It can be written as a sum of positive squares in 4 ways, for example, as 4449281486224 + 15555262208256 = 2109332^2 + 3944016^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

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, 77576935 + ... + 77834374.

It is an arithmetic number, because the mean of its divisors is an integer number (1163486772315).

Almost surely, 2^{20004543694480} is an apocalyptic number.

20004543694480 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20004543694480 is an abundant number, since it is smaller than the sum of its proper divisors (26534927198120).

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

20004543694480 is a wasteful number, since it uses less digits than its factorization.

20004543694480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155412931 (or 155412925 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 49.

The spelling of 20004543694480 in words is "twenty trillion, four billion, five hundred forty-three million, six hundred ninety-four thousand, four hundred eighty".