253446450820 has 12 divisors (see below), whose sum is σ = 532237546764. Its totient is φ = 101378580320.

The previous prime is 253446450809. The next prime is 253446450827. The reversal of 253446450820 is 28054644352.

It can be written as a sum of positive squares in 2 ways, for example, as 120116310084 + 133330140736 = 346578^2 + 365144^2 .

It is not an unprimeable number, because it can be changed into a prime (253446450827) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6336161251 + ... + 6336161290.

It is an arithmetic number, because the mean of its divisors is an integer number (44353128897).

Almost surely, 2^253446450820 is an apocalyptic number.

253446450820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253446450820 is an abundant number, since it is smaller than the sum of its proper divisors (278791095944).

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

253446450820 is a wasteful number, since it uses less digits than its factorization.

253446450820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12672322550 (or 12672322548 counting only the distinct ones).

The product of its (nonzero) digits is 921600, while the sum is 43.

The spelling of 253446450820 in words is "two hundred fifty-three billion, four hundred forty-six million, four hundred fifty thousand, eight hundred twenty".