2502006661 has 24 divisors (see below), whose sum is σ = 3189999680. Its totient is φ = 1920473280.

The previous prime is 2502006649. The next prime is 2502006667. The reversal of 2502006661 is 1666002052.

It is not a de Polignac number, because 2502006661 - 2⁵ = 2502006629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2502006667) 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, 34705 + ... + 78793.

Almost surely, 2^2502006661 is an apocalyptic number.

It is an amenable number.

2502006661 is a deficient number, since it is larger than the sum of its proper divisors (687993019).

2502006661 is a wasteful number, since it uses less digits than its factorization.

2502006661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44185 (or 44174 counting only the distinct ones).

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 2502006661 is about 50020.0625849269. The cubic root of 2502006661 is about 1357.5718389154.

The spelling of 2502006661 in words is "two billion, five hundred two million, six thousand, six hundred sixty-one".