2661852672 has 80 divisors (see below), whose sum is σ = 7879309680. Its totient is φ = 887279616.

The previous prime is 2661852649. The next prime is 2661852733. The reversal of 2661852672 is 2762581662.

2661852672 is a `hidden beast` number, since 2 + 6 + 618 + 5 + 26 + 7 + 2 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 82453 + ... + 110100.

It is an arithmetic number, because the mean of its divisors is an integer number (98491371).

Almost surely, 2^2661852672 is an apocalyptic number.

It is an amenable number.

2661852672 is an abundant number, since it is smaller than the sum of its proper divisors (5217457008).

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

2661852672 is an equidigital number, since it uses as much as digits as its factorization.

2661852672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 192580 (or 192558 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The square root of 2661852672 is about 51593.1455912508. The cubic root of 2661852672 is about 1385.8875866925.

The spelling of 2661852672 in words is "two billion, six hundred sixty-one million, eight hundred fifty-two thousand, six hundred seventy-two".