2153261320 has 64 divisors (see below), whose sum is σ = 5542992000. Its totient is φ = 737456640.

The previous prime is 2153261309. The next prime is 2153261321. The reversal of 2153261320 is 231623512.

It is not an unprimeable number, because it can be changed into a prime (2153261321) 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, 290055 + ... + 297385.

It is an arithmetic number, because the mean of its divisors is an integer number (86609250).

Almost surely, 2^2153261320 is an apocalyptic number.

2153261320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2153261320 is an abundant number, since it is smaller than the sum of its proper divisors (3389730680).

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

2153261320 is a wasteful number, since it uses less digits than its factorization.

2153261320 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8398 (or 8394 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 2153261320 is about 46403.2468691578. The cubic root of 2153261320 is about 1291.3151501505.

Adding to 2153261320 its reverse (231623512), we get a palindrome (2384884832).

The spelling of 2153261320 in words is "two billion, one hundred fifty-three million, two hundred sixty-one thousand, three hundred twenty".