20017016124 has 48 divisors (see below), whose sum is σ = 53698380288. Its totient is φ = 5684897088.

The previous prime is 20017016101. The next prime is 20017016137. The reversal of 20017016124 is 42161071002.

It is a junction number, because it is equal to n+sod(n) for n = 20017016094 and 20017016103.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 699439 + ... + 727494.

It is an arithmetic number, because the mean of its divisors is an integer number (1118716256).

Almost surely, 2^20017016124 is an apocalyptic number.

It is an amenable number.

20017016124 is an abundant number, since it is smaller than the sum of its proper divisors (33681364164).

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

20017016124 is a wasteful number, since it uses less digits than its factorization.

20017016124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1427114 (or 1427112 counting only the distinct ones).

The product of its (nonzero) digits is 672, while the sum is 24.

Adding to 20017016124 its reverse (42161071002), we get a palindrome (62178087126).

The spelling of 20017016124 in words is "twenty billion, seventeen million, sixteen thousand, one hundred twenty-four".