253020355500 has 192 divisors, whose sum is σ = 804494186496. Its totient is φ = 61283520000.

The previous prime is 253020355499. The next prime is 253020355571. The reversal of 253020355500 is 5553020352.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 20305272 + ... + 20317728.

It is an arithmetic number, because the mean of its divisors is an integer number (4190073888).

Almost surely, 2^253020355500 is an apocalyptic number.

253020355500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 253020355500, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (402247093248).

253020355500 is an abundant number, since it is smaller than the sum of its proper divisors (551473830996).

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

253020355500 is a wasteful number, since it uses less digits than its factorization.

253020355500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13721 (or 13709 counting only the distinct ones).

The product of its (nonzero) digits is 22500, while the sum is 30.

Adding to 253020355500 its reverse (5553020352), we get a palindrome (258573375852).

The spelling of 253020355500 in words is "two hundred fifty-three billion, twenty million, three hundred fifty-five thousand, five hundred".