20150555505102 has 96 divisors (see below), whose sum is σ = 48943685007360. Its totient is φ = 5937814330560.

The previous prime is 20150555505097. The next prime is 20150555505149.

20150555505102 is a `hidden beast` number, since 2 + 0 + 1 + 5 + 0 + 55 + 550 + 51 + 0 + 2 = 666.

20150555505102 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 12104583 + ... + 13668285.

It is an arithmetic number, because the mean of its divisors is an integer number (509830052160).

Almost surely, 2^{20150555505102} is an apocalyptic number.

20150555505102 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 20150555505102, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (24471842503680).

20150555505102 is an abundant number, since it is smaller than the sum of its proper divisors (28793129502258).

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

20150555505102 is a wasteful number, since it uses less digits than its factorization.

20150555505102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1565518 (or 1565515 counting only the distinct ones).

The product of its (nonzero) digits is 62500, while the sum is 36.

The spelling of 20150555505102 in words is "twenty trillion, one hundred fifty billion, five hundred fifty-five million, five hundred five thousand, one hundred two".