2153220040 has 16 divisors (see below), whose sum is σ = 4844745180. Its totient is φ = 861288000.

The previous prime is 2153220037. The next prime is 2153220061. The reversal of 2153220040 is 400223512.

It can be written as a sum of positive squares in 2 ways, for example, as 2016189604 + 137030436 = 44902^2 + 11706^2 .

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 3 ways as a sum of consecutive naturals, for example, 26915211 + ... + 26915290.

Almost surely, 2^2153220040 is an apocalyptic number.

2153220040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2153220040 is an abundant number, since it is smaller than the sum of its proper divisors (2691525140).

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

2153220040 is a wasteful number, since it uses less digits than its factorization.

2153220040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53830512 (or 53830508 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 2153220040 is about 46402.8020705647. The cubic root of 2153220040 is about 1291.3068981980.

Adding to 2153220040 its reverse (400223512), we get a palindrome (2553443552).

The spelling of 2153220040 in words is "two billion, one hundred fifty-three million, two hundred twenty thousand, forty".