2669181720 has 32 divisors (see below), whose sum is σ = 8007545520. Its totient is φ = 711781760.

The previous prime is 2669181703. The next prime is 2669181799. The reversal of 2669181720 is 271819662.

2669181720 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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, 11121471 + ... + 11121710.

Almost surely, 2^2669181720 is an apocalyptic number.

2669181720 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2669181720 is an abundant number, since it is smaller than the sum of its proper divisors (5338363800).

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

2669181720 is a wasteful number, since it uses less digits than its factorization.

2669181720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22243195 (or 22243191 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 42.

The square root of 2669181720 is about 51664.1241094824. The cubic root of 2669181720 is about 1387.1583718612.

The spelling of 2669181720 in words is "two billion, six hundred sixty-nine million, one hundred eighty-one thousand, seven hundred twenty".