2153432450420 has 24 divisors (see below), whose sum is σ = 4562227691784. Its totient is φ = 853750209536.

The previous prime is 2153432450419. The next prime is 2153432450467. The reversal of 2153432450420 is 240542343512.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 119973562384 + 2033458888036 = 346372^2 + 1425994^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 476420849 + ... + 476425368.

It is an arithmetic number, because the mean of its divisors is an integer number (190092820491).

Almost surely, 2^{2153432450420} is an apocalyptic number.

2153432450420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

2153432450420 is an abundant number, since it is smaller than the sum of its proper divisors (2408795241364).

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

2153432450420 is a wasteful number, since it uses less digits than its factorization.

2153432450420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 952846339 (or 952846337 counting only the distinct ones).

The product of its (nonzero) digits is 115200, while the sum is 35.

Adding to 2153432450420 its reverse (240542343512), we get a palindrome (2393974793932).

The spelling of 2153432450420 in words is "two trillion, one hundred fifty-three billion, four hundred thirty-two million, four hundred fifty thousand, four hundred twenty".