145520509660 has 48 divisors (see below), whose sum is σ = 324069729984. Its totient is φ = 54699435008.

The previous prime is 145520509627. The next prime is 145520509753. The reversal of 145520509660 is 66905025541.

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, 110779 + ... + 550738.

It is an arithmetic number, because the mean of its divisors is an integer number (6751452708).

Almost surely, 2^145520509660 is an apocalyptic number.

145520509660 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145520509660 is an abundant number, since it is smaller than the sum of its proper divisors (178549220324).

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

145520509660 is a wasteful number, since it uses less digits than its factorization.

145520509660 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 662190 (or 662188 counting only the distinct ones).

The product of its (nonzero) digits is 324000, while the sum is 43.

The spelling of 145520509660 in words is "one hundred forty-five billion, five hundred twenty million, five hundred nine thousand, six hundred sixty".