145536640520 has 16 divisors (see below), whose sum is σ = 327457441260. Its totient is φ = 58214656192.

The previous prime is 145536640517. The next prime is 145536640523. The reversal of 145536640520 is 25046635541.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (145536640517) and next prime (145536640523).

It can be written as a sum of positive squares in 2 ways, for example, as 134993047396 + 10543593124 = 367414^2 + 102682^2 .

It is not an unprimeable number, because it can be changed into a prime (145536640523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1819207967 + ... + 1819208046.

Almost surely, 2^145536640520 is an apocalyptic number.

145536640520 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

145536640520 is an abundant number, since it is smaller than the sum of its proper divisors (181920800740).

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

145536640520 is a wasteful number, since it uses less digits than its factorization.

145536640520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3638416024 (or 3638416020 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 41.

The spelling of 145536640520 in words is "one hundred forty-five billion, five hundred thirty-six million, six hundred forty thousand, five hundred twenty".