145545656520 has 256 divisors, whose sum is σ = 480707758080. Its totient is φ = 34960896000.

The previous prime is 145545656479. The next prime is 145545656533. The reversal of 145545656520 is 25656545541.

It is a self number, because there is not a number n which added to its sum of digits gives 145545656520.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 112216512 + ... + 112217808.

It is an arithmetic number, because the mean of its divisors is an integer number (1877764680).

Almost surely, 2^145545656520 is an apocalyptic number.

145545656520 is a gapful number since it is divisible by the number (10) 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 145545656520, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (240353879040).

145545656520 is an abundant number, since it is smaller than the sum of its proper divisors (335162101560).

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

145545656520 is a wasteful number, since it uses less digits than its factorization.

145545656520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2036 (or 2032 counting only the distinct ones).

The product of its (nonzero) digits is 3600000, while the sum is 48.

The spelling of 145545656520 in words is "one hundred forty-five billion, five hundred forty-five million, six hundred fifty-six thousand, five hundred twenty".