2118567680 has 36 divisors (see below), whose sum is σ = 5074634712. Its totient is φ = 847426560.

The previous prime is 2118567677. The next prime is 2118567691. The reversal of 2118567680 is 867658112.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 826286 + ... + 828845.

Almost surely, 2^2118567680 is an apocalyptic number.

2118567680 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2118567680 is an abundant number, since it is smaller than the sum of its proper divisors (2956067032).

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

2118567680 is an equidigital number, since it uses as much as digits as its factorization.

2118567680 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1655152 (or 1655138 counting only the distinct ones).

The product of its (nonzero) digits is 161280, while the sum is 44.

The square root of 2118567680 is about 46027.9011035698. The cubic root of 2118567680 is about 1284.3422837888.

The spelling of 2118567680 in words is "two billion, one hundred eighteen million, five hundred sixty-seven thousand, six hundred eighty".