528721425900 has 108 divisors (see below), whose sum is σ = 1685337053400. Its totient is φ = 138602664960.

The previous prime is 528721425871. The next prime is 528721425913. The reversal of 528721425900 is 9524127825.

528721425900 is a `hidden beast` number, since 52 + 8 + 7 + 2 + 1 + 4 + 2 + 590 + 0 = 666.

528721425900 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 4925445 + ... + 5031644.

Almost surely, 2^528721425900 is an apocalyptic number.

528721425900 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

528721425900 is an abundant number, since it is smaller than the sum of its proper divisors (1156615627500).

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

528721425900 is a wasteful number, since it uses less digits than its factorization.

528721425900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9957168 (or 9957158 counting only the distinct ones).

The product of its (nonzero) digits is 403200, while the sum is 45.

The spelling of 528721425900 in words is "five hundred twenty-eight billion, seven hundred twenty-one million, four hundred twenty-five thousand, nine hundred".