2665163630536 has 128 divisors (see below), whose sum is σ = 5833113212160. Its totient is φ = 1128188108800.

The previous prime is 2665163630527. The next prime is 2665163630579. The reversal of 2665163630536 is 6350363615662.

It is a happy number.

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 31 ways as a sum of consecutive naturals, for example, 63719166 + ... + 63760978.

It is an arithmetic number, because the mean of its divisors is an integer number (45571196970).

Almost surely, 2^{2665163630536} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2665163630536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2916556606080).

2665163630536 is an abundant number, since it is smaller than the sum of its proper divisors (3167949581624).

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

2665163630536 is a wasteful number, since it uses less digits than its factorization.

2665163630536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42295 (or 42291 counting only the distinct ones).

The product of its (nonzero) digits is 10497600, while the sum is 52.

The spelling of 2665163630536 in words is "two trillion, six hundred sixty-five billion, one hundred sixty-three million, six hundred thirty thousand, five hundred thirty-six".