253821005830 has 64 divisors (see below), whose sum is σ = 531241970688. Its totient is φ = 85521271680.

The previous prime is 253821005761. The next prime is 253821005839. The reversal of 253821005830 is 38500128352.

It is a super-3 number, since 3×253821005830³ (a number of 35 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 253821005830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253821005839) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 810144 + ... + 1078876.

It is an arithmetic number, because the mean of its divisors is an integer number (8300655792).

Almost surely, 2^253821005830 is an apocalyptic number.

253821005830 is an abundant number, since it is smaller than the sum of its proper divisors (277420964858).

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

253821005830 is a wasteful number, since it uses less digits than its factorization.

253821005830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 268981.

The product of its (nonzero) digits is 57600, while the sum is 37.

The spelling of 253821005830 in words is "two hundred fifty-three billion, eight hundred twenty-one million, five thousand, eight hundred thirty".