253445133040 has 80 divisors (see below), whose sum is σ = 642934608480. Its totient is φ = 92146728960.

The previous prime is 253445132971. The next prime is 253445133041. The reversal of 253445133040 is 40331544352.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 253445132987 and 253445133005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253445133041) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6295696 + ... + 6335824.

It is an arithmetic number, because the mean of its divisors is an integer number (8036682606).

Almost surely, 2^253445133040 is an apocalyptic number.

253445133040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253445133040 is an abundant number, since it is smaller than the sum of its proper divisors (389489475440).

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

253445133040 is a wasteful number, since it uses less digits than its factorization.

253445133040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47330 (or 47324 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 34.

Adding to 253445133040 its reverse (40331544352), we get a palindrome (293776677392).

The spelling of 253445133040 in words is "two hundred fifty-three billion, four hundred forty-five million, one hundred thirty-three thousand, forty".