2601136530 has 128 divisors (see below), whose sum is σ = 7219445760. Its totient is φ = 665703360.

The previous prime is 2601136501. The next prime is 2601136543. The reversal of 2601136530 is 356311062.

2601136530 is a `hidden beast` number, since 2 + 6 + 0 + 1 + 1 + 3 + 653 + 0 = 666.

It is a super-2 number, since 2×2601136530² = 13531822495400881800, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a junction number, because it is equal to n+sod(n) for n = 2601136494 and 2601136503.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1061767 + ... + 1064213.

It is an arithmetic number, because the mean of its divisors is an integer number (56401920).

Almost surely, 2^2601136530 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2601136530, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3609722880).

2601136530 is an abundant number, since it is smaller than the sum of its proper divisors (4618309230).

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

2601136530 is a wasteful number, since it uses less digits than its factorization.

2601136530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2621 (or 2615 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 27.

The square root of 2601136530 is about 51001.3385118469. The cubic root of 2601136530 is about 1375.2691977613.

Adding to 2601136530 its reverse (356311062), we get a palindrome (2957447592).

The spelling of 2601136530 in words is "two billion, six hundred one million, one hundred thirty-six thousand, five hundred thirty".