20134155474816 has 32 divisors (see below), whose sum is σ = 53481350481000. Its totient is φ = 6711385158144.

The previous prime is 20134155474799. The next prime is 20134155474817. The reversal of 20134155474816 is 61847455143102.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20134155474817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 26216347891 + ... + 26216348658.

Almost surely, 2^{20134155474816} is an apocalyptic number.

It is an amenable number.

20134155474816 is an abundant number, since it is smaller than the sum of its proper divisors (33347195006184).

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

20134155474816 is an equidigital number, since it uses as much as digits as its factorization.

20134155474816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52432696566 (or 52432696554 counting only the distinct ones).

The product of its (nonzero) digits is 3225600, while the sum is 51.

The spelling of 20134155474816 in words is "twenty trillion, one hundred thirty-four billion, one hundred fifty-five million, four hundred seventy-four thousand, eight hundred sixteen".