20017061830 has 32 divisors (see below), whose sum is σ = 37934517600. Its totient is φ = 7583922432.

The previous prime is 20017061741. The next prime is 20017061843. The reversal of 20017061830 is 3816071002.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1706626 + ... + 1718314.

It is an arithmetic number, because the mean of its divisors is an integer number (1185453675).

Almost surely, 2^20017061830 is an apocalyptic number.

20017061830 is a deficient number, since it is larger than the sum of its proper divisors (17917455770).

20017061830 is a wasteful number, since it uses less digits than its factorization.

20017061830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20728.

The product of its (nonzero) digits is 2016, while the sum is 28.

The spelling of 20017061830 in words is "twenty billion, seventeen million, sixty-one thousand, eight hundred thirty".