20528924616 has 24 divisors (see below), whose sum is σ = 55599171030. Its totient is φ = 6842974848.

The previous prime is 20528924609. The next prime is 20528924627. The reversal of 20528924616 is 61642982502.

20528924616 is a `hidden beast` number, since 2 + 0 + 5 + 2 + 8 + 9 + 24 + 616 = 666.

It can be written as a sum of positive squares in only one way, i.e., 17887992516 + 2640932100 = 133746^2 + 51390^2 .

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-3 number, since 3×20528924616³ (a number of 32 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 142561905 + ... + 142562048.

Almost surely, 2^20528924616 is an apocalyptic number.

It is an amenable number.

20528924616 is an abundant number, since it is smaller than the sum of its proper divisors (35070246414).

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

20528924616 is a wasteful number, since it uses less digits than its factorization.

20528924616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 285123965 (or 285123958 counting only the distinct ones).

The product of its (nonzero) digits is 414720, while the sum is 45.

The spelling of 20528924616 in words is "twenty billion, five hundred twenty-eight million, nine hundred twenty-four thousand, six hundred sixteen".