503145520000 has 160 divisors (see below), whose sum is σ = 1255608545400. Its totient is φ = 200766720000.

The previous prime is 503145519997. The next prime is 503145520001. The reversal of 503145520000 is 25541305.

It is a tau number, because it is divible by the number of its divisors (160).

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (503145520001) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 33672531 + ... + 33687469.

Almost surely, 2^503145520000 is an apocalyptic number.

503145520000 is a gapful number since it is divisible by the number (50) 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 503145520000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (627804272700).

503145520000 is an abundant number, since it is smaller than the sum of its proper divisors (752463025400).

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

503145520000 is an equidigital number, since it uses as much as digits as its factorization.

503145520000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15394 (or 15367 counting only the distinct ones).

The product of its (nonzero) digits is 3000, while the sum is 25.

The spelling of 503145520000 in words is "five hundred three billion, one hundred forty-five million, five hundred twenty thousand".