2661216060 has 24 divisors (see below), whose sum is σ = 7451405136. Its totient is φ = 709657600.

The previous prime is 2661216053. The next prime is 2661216071. The reversal of 2661216060 is 606121662.

It is a Harshad number since it is a multiple of its sum of digits (30).

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, 22176741 + ... + 22176860.

It is an arithmetic number, because the mean of its divisors is an integer number (310475214).

Almost surely, 2^2661216060 is an apocalyptic number.

2661216060 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2661216060 is an abundant number, since it is smaller than the sum of its proper divisors (4790189076).

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

2661216060 is a wasteful number, since it uses less digits than its factorization.

2661216060 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44353613 (or 44353611 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 30.

The square root of 2661216060 is about 51586.9756818521. The cubic root of 2661216060 is about 1385.7770943498. Note that the first 3 decimals are identical.

The spelling of 2661216060 in words is "two billion, six hundred sixty-one million, two hundred sixteen thousand, sixty".