20385190537184 has 48 divisors (see below), whose sum is σ = 43965017429760. Its totient is φ = 9227225804160.

The previous prime is 20385190537133. The next prime is 20385190537249. The reversal of 20385190537184 is 48173509158302.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 121071674 + ... + 121239929.

It is an arithmetic number, because the mean of its divisors is an integer number (915937863120).

Almost surely, 2^{20385190537184} is an apocalyptic number.

It is an amenable number.

20385190537184 is an abundant number, since it is smaller than the sum of its proper divisors (23579826892576).

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

20385190537184 is a wasteful number, since it uses less digits than its factorization.

20385190537184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242311863 (or 242311855 counting only the distinct ones).

The product of its (nonzero) digits is 7257600, while the sum is 56.

The spelling of 20385190537184 in words is "twenty trillion, three hundred eighty-five billion, one hundred ninety million, five hundred thirty-seven thousand, one hundred eighty-four".