2691055680 has 56 divisors (see below), whose sum is σ = 8544104832. Its totient is φ = 717614592.

The previous prime is 2691055663. The next prime is 2691055699. The reversal of 2691055680 is 865501962.

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, 1400632 + ... + 1402551.

Almost surely, 2^2691055680 is an apocalyptic number.

2691055680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2691055680 is an abundant number, since it is smaller than the sum of its proper divisors (5853049152).

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

2691055680 is a wasteful number, since it uses less digits than its factorization.

2691055680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2803203 (or 2803193 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 42.

The square root of 2691055680 is about 51875.3860708525. The cubic root of 2691055680 is about 1390.9373247602.

The spelling of 2691055680 in words is "two billion, six hundred ninety-one million, fifty-five thousand, six hundred eighty".