2651218120 has 64 divisors (see below), whose sum is σ = 6016388400. Its totient is φ = 1051438080.

The previous prime is 2651218111. The next prime is 2651218123. The reversal of 2651218120 is 218121562.

It can be written as a sum of positive squares in 8 ways, for example, as 2537539876 + 113678244 = 50374^2 + 10662^2 .

It is not an unprimeable number, because it can be changed into a prime (2651218123) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4010590 + ... + 4011250.

Almost surely, 2^2651218120 is an apocalyptic number.

2651218120 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2651218120 is an abundant number, since it is smaller than the sum of its proper divisors (3365170280).

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

2651218120 is a wasteful number, since it uses less digits than its factorization.

2651218120 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378 (or 1374 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 28.

The square root of 2651218120 is about 51489.9807729620. The cubic root of 2651218120 is about 1384.0395048699.

Adding to 2651218120 its reverse (218121562), we get a palindrome (2869339682).

It can be divided in two parts, 26512181 and 20, that added together give a square (26512201 = 5149²).

The spelling of 2651218120 in words is "two billion, six hundred fifty-one million, two hundred eighteen thousand, one hundred twenty".