20117527530 has 64 divisors (see below), whose sum is σ = 50404515840. Its totient is φ = 5129061696.

The previous prime is 20117527519. The next prime is 20117527559. The reversal of 20117527530 is 3572571102.

It is a happy number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 20117527491 and 20117527500.

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 31 ways as a sum of consecutive naturals, for example, 1870749 + ... + 1881471.

It is an arithmetic number, because the mean of its divisors is an integer number (787570560).

Almost surely, 2^20117527530 is an apocalyptic number.

20117527530 is an abundant number, since it is smaller than the sum of its proper divisors (30286988310).

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

20117527530 is a wasteful number, since it uses less digits than its factorization.

20117527530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13475.

The product of its (nonzero) digits is 14700, while the sum is 33.

The spelling of 20117527530 in words is "twenty billion, one hundred seventeen million, five hundred twenty-seven thousand, five hundred thirty".