2661013850 has 72 divisors (see below), whose sum is σ = 5456955420. Its totient is φ = 964691200.

The previous prime is 2661013829. The next prime is 2661013921. The reversal of 2661013850 is 583101662.

It is a happy number.

It can be written as a sum of positive squares in 6 ways, for example, as 99540529 + 2561473321 = 9977^2 + 50611^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 3442064 + ... + 3442836.

Almost surely, 2^2661013850 is an apocalyptic number.

2661013850 is an abundant number, since it is smaller than the sum of its proper divisors (2795941570).

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

2661013850 is a wasteful number, since it uses less digits than its factorization.

2661013850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1376 (or 1360 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 2661013850 is about 51585.0157507003. The cubic root of 2661013850 is about 1385.7419944710.

The spelling of 2661013850 in words is "two billion, six hundred sixty-one million, thirteen thousand, eight hundred fifty".