20386158357120 has 128 divisors (see below), whose sum is σ = 67077037370880. Its totient is φ = 5260944076800.

The previous prime is 20386158357091. The next prime is 20386158357139. The reversal of 20386158357120 is 2175385168302.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

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, 171195171 + ... + 171314210.

It is an arithmetic number, because the mean of its divisors is an integer number (524039354460).

Almost surely, 2^{20386158357120} is an apocalyptic number.

20386158357120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20386158357120 is an abundant number, since it is smaller than the sum of its proper divisors (46690879013760).

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

20386158357120 is a wasteful number, since it uses less digits than its factorization.

20386158357120 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 342509434 (or 342509422 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 51.

The spelling of 20386158357120 in words is "twenty trillion, three hundred eighty-six billion, one hundred fifty-eight million, three hundred fifty-seven thousand, one hundred twenty".