20504554000 has 80 divisors (see below), whose sum is σ = 56662909056. Its totient is φ = 7030128000.

The previous prime is 20504553989. The next prime is 20504554013. The reversal of 20504554000 is 45540502.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-3 number, since 3×20504554000³ (a number of 32 digits) contains 333 as substring.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 718306 + ... + 746305.

Almost surely, 2^20504554000 is an apocalyptic number.

20504554000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20504554000 is an abundant number, since it is smaller than the sum of its proper divisors (36158355056).

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

20504554000 is a wasteful number, since it uses less digits than its factorization.

20504554000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1464641 (or 1464625 counting only the distinct ones).

The product of its (nonzero) digits is 4000, while the sum is 25.

The spelling of 20504554000 in words is "twenty billion, five hundred four million, five hundred fifty-four thousand".