2661944310 has 80 divisors (see below), whose sum is σ = 7190257536. Its totient is φ = 706620672.

The previous prime is 2661944293. The next prime is 2661944333. The reversal of 2661944310 is 134491662.

2661944310 is a `hidden beast` number, since 2 + 6 + 619 + 4 + 4 + 31 + 0 = 666.

It is a super-2 number, since 2×2661944310² = 14171895019082752200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 173262 + ... + 187998.

Almost surely, 2^2661944310 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2661944310, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3595128768).

2661944310 is an abundant number, since it is smaller than the sum of its proper divisors (4528313226).

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

2661944310 is a wasteful number, since it uses less digits than its factorization.

2661944310 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14979 (or 14970 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 36.

The square root of 2661944310 is about 51594.0336666944. The cubic root of 2661944310 is about 1385.9034902160.

The spelling of 2661944310 in words is "two billion, six hundred sixty-one million, nine hundred forty-four thousand, three hundred ten".