253442203340 has 48 divisors (see below), whose sum is σ = 537809698272. Its totient is φ = 100314187776.

The previous prime is 253442203321. The next prime is 253442203373. The reversal of 253442203340 is 43302244352.

It is a junction number, because it is equal to n+sod(n) for n = 253442203297 and 253442203306.

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, 21250619 + ... + 21262541.

It is an arithmetic number, because the mean of its divisors is an integer number (11204368714).

Almost surely, 2^253442203340 is an apocalyptic number.

253442203340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253442203340 is an abundant number, since it is smaller than the sum of its proper divisors (284367494932).

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

253442203340 is a wasteful number, since it uses less digits than its factorization.

253442203340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22986 (or 22984 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 32.

Adding to 253442203340 its reverse (43302244352), we get a palindrome (296744447692).

The spelling of 253442203340 in words is "two hundred fifty-three billion, four hundred forty-two million, two hundred three thousand, three hundred forty".