253423313120240 has 80 divisors (see below), whose sum is σ = 589936424920128. Its totient is φ = 101244236249088.

The previous prime is 253423313120221. The next prime is 253423313120261. The reversal of 253423313120240 is 42021313324352.

It is a tau number, because it is divible by the number of its divisors (80).

It is a self number, because there is not a number n which added to its sum of digits gives 253423313120240.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 681952724 + ... + 682324236.

Almost surely, 2^{253423313120240} is an apocalyptic number.

253423313120240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253423313120240 is an abundant number, since it is smaller than the sum of its proper divisors (336513111799888).

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

253423313120240 is a wasteful number, since it uses less digits than its factorization.

253423313120240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382026 (or 382020 counting only the distinct ones).

The product of its (nonzero) digits is 103680, while the sum is 35.

Adding to 253423313120240 its reverse (42021313324352), we get a palindrome (295444626444592).

The spelling of 253423313120240 in words is "two hundred fifty-three trillion, four hundred twenty-three billion, three hundred thirteen million, one hundred twenty thousand, two hundred forty".