2661251310 has 48 divisors (see below), whose sum is σ = 6931806336. Its totient is φ = 708379584.

The previous prime is 2661251293. The next prime is 2661251311. The reversal of 2661251310 is 131521662.

2661251310 is a `hidden beast` number, since 26 + 612 + 5 + 13 + 10 = 666.

It is a super-2 number, since 2×2661251310² = 14164517069953432200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2661251311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 23587 + ... + 76673.

It is an arithmetic number, because the mean of its divisors is an integer number (144412632).

Almost surely, 2^2661251310 is an apocalyptic number.

2661251310 is an abundant number, since it is smaller than the sum of its proper divisors (4270555026).

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

2661251310 is a wasteful number, since it uses less digits than its factorization.

2661251310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53657 (or 53654 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 2661251310 is about 51587.3173367253. The cubic root of 2661251310 is about 1385.7832129094.

Adding to 2661251310 its reverse (131521662), we get a palindrome (2792772972).

The spelling of 2661251310 in words is "two billion, six hundred sixty-one million, two hundred fifty-one thousand, three hundred ten".