2177997712 has 40 divisors (see below), whose sum is σ = 4608544320. Its totient is φ = 988913280.

The previous prime is 2177997709. The next prime is 2177997737.

It is a happy number.

2177997712 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 2177997712.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 166714 + ... + 179302.

It is an arithmetic number, because the mean of its divisors is an integer number (115213608).

Almost surely, 2^2177997712 is an apocalyptic number.

2177997712 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

It is an amenable number.

2177997712 is an abundant number, since it is smaller than the sum of its proper divisors (2430546608).

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

2177997712 is a wasteful number, since it uses less digits than its factorization.

2177997712 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13591 (or 13585 counting only the distinct ones).

The product of its digits is 777924, while the sum is 52.

The square root of 2177997712 is about 46669.0230452706. The cubic root of 2177997712 is about 1296.2411562869.

The spelling of 2177997712 in words is "two billion, one hundred seventy-seven million, nine hundred ninety-seven thousand, seven hundred twelve".