20104151355055 has 16 divisors (see below), whose sum is σ = 24430703569920. Its totient is φ = 15879512162592.

The previous prime is 20104151355053. The next prime is 20104151355089. The reversal of 20104151355055 is 55055315140102.

It is a cyclic number.

It is not a de Polignac number, because 20104151355055 - 2¹ = 20104151355053 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20104151355053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31444272 + ... + 32077258.

It is an arithmetic number, because the mean of its divisors is an integer number (1526918973120).

Almost surely, 2^{20104151355055} is an apocalyptic number.

20104151355055 is a deficient number, since it is larger than the sum of its proper divisors (4326552214865).

20104151355055 is an equidigital number, since it uses as much as digits as its factorization.

20104151355055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713478.

The product of its (nonzero) digits is 75000, while the sum is 37.

Adding to 20104151355055 its reverse (55055315140102), we get a palindrome (75159466495157).

The spelling of 20104151355055 in words is "twenty trillion, one hundred four billion, one hundred fifty-one million, three hundred fifty-five thousand, fifty-five".