20050005520 has 40 divisors (see below), whose sum is σ = 46652835456. Its totient is φ = 8013710208.

The previous prime is 20050005509. The next prime is 20050005539. The reversal of 20050005520 is 2550005002.

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

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4969 + ... + 200311.

Almost surely, 2^20050005520 is an apocalyptic number.

20050005520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20050005520 is an abundant number, since it is smaller than the sum of its proper divisors (26602829936).

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

20050005520 is a wasteful number, since it uses less digits than its factorization.

20050005520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196639 (or 196633 counting only the distinct ones).

The product of its (nonzero) digits is 500, while the sum is 19.

The spelling of 20050005520 in words is "twenty billion, fifty million, five thousand, five hundred twenty".