20148938017516 has 36 divisors (see below), whose sum is σ = 44746342874856. Its totient is φ = 7850235590400.

The previous prime is 20148938017493. The next prime is 20148938017519. The reversal of 20148938017516 is 61571083984102.

It is not an unprimeable number, because it can be changed into a prime (20148938017519) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4672757125 + ... + 4672761436.

It is an arithmetic number, because the mean of its divisors is an integer number (1242953968746).

It is a 1-persistent number, because it is pandigital, but 2⋅20148938017516 = 40297876035032 is not.

Almost surely, 2^{20148938017516} is an apocalyptic number.

It is an amenable number.

20148938017516 is an abundant number, since it is smaller than the sum of its proper divisors (24597404857340).

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

20148938017516 is a wasteful number, since it uses less digits than its factorization.

20148938017516 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9345518590 (or 9345518581 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 55.

The spelling of 20148938017516 in words is "twenty trillion, one hundred forty-eight billion, nine hundred thirty-eight million, seventeen thousand, five hundred sixteen".