20386685155398 has 16 divisors (see below), whose sum is σ = 40781363583216. Its totient is φ = 6794229506400.

The previous prime is 20386685155391. The next prime is 20386685155483. The reversal of 20386685155398 is 89355158668302.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20386685155391) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 333019861 + ... + 333081072.

It is an arithmetic number, because the mean of its divisors is an integer number (2548835223951).

Almost surely, 2^{20386685155398} is an apocalyptic number.

20386685155398 is an abundant number, since it is smaller than the sum of its proper divisors (20394678427818).

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

20386685155398 is a wasteful number, since it uses less digits than its factorization.

20386685155398 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 666106039.

The product of its (nonzero) digits is 373248000, while the sum is 69.

The spelling of 20386685155398 in words is "twenty trillion, three hundred eighty-six billion, six hundred eighty-five million, one hundred fifty-five thousand, three hundred ninety-eight".