253669019240 has 384 divisors, whose sum is σ = 743630025600. Its totient is φ = 77098936320.

The previous prime is 253669019207. The next prime is 253669019267. The reversal of 253669019240 is 42910966352.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 155911307 + ... + 155912933.

It is an arithmetic number, because the mean of its divisors is an integer number (1936536525).

Almost surely, 2^253669019240 is an apocalyptic number.

253669019240 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 253669019240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (371815012800).

253669019240 is an abundant number, since it is smaller than the sum of its proper divisors (489961006360).

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

253669019240 is a wasteful number, since it uses less digits than its factorization.

253669019240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1905 (or 1894 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 47.

The spelling of 253669019240 in words is "two hundred fifty-three billion, six hundred sixty-nine million, nineteen thousand, two hundred forty".