253869422820 has 384 divisors, whose sum is σ = 840943337472. Its totient is φ = 56628633600.

The previous prime is 253869422813. The next prime is 253869422831. The reversal of 253869422820 is 28224968352.

It is a Harshad number since it is a multiple of its sum of digits (51).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 86732197 + ... + 86735123.

It is an arithmetic number, because the mean of its divisors is an integer number (2189956608).

Almost surely, 2^253869422820 is an apocalyptic number.

253869422820 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 253869422820, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (420471668736).

253869422820 is an abundant number, since it is smaller than the sum of its proper divisors (587073914652).

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

253869422820 is a wasteful number, since it uses less digits than its factorization.

253869422820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3211 (or 3209 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 51.

The spelling of 253869422820 in words is "two hundred fifty-three billion, eight hundred sixty-nine million, four hundred twenty-two thousand, eight hundred twenty".