253430541305520 has 40 divisors (see below), whose sum is σ = 785634678047856. Its totient is φ = 67581477681408.

The previous prime is 253430541305477. The next prime is 253430541305533. The reversal of 253430541305520 is 25503145034352.

It is a tau number, because it is divible by the number of its divisors (40).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 527980294147 + ... + 527980294626.

Almost surely, 2^{253430541305520} is an apocalyptic number.

253430541305520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

253430541305520 is an abundant number, since it is smaller than the sum of its proper divisors (532204136742336).

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

253430541305520 is a wasteful number, since it uses less digits than its factorization.

253430541305520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1055960588789 (or 1055960588783 counting only the distinct ones).

The product of its (nonzero) digits is 1080000, while the sum is 42.

Adding to 253430541305520 its reverse (25503145034352), we get a palindrome (278933686339872).

The spelling of 253430541305520 in words is "two hundred fifty-three trillion, four hundred thirty billion, five hundred forty-one million, three hundred five thousand, five hundred twenty".