145303132521 has 16 divisors (see below), whose sum is σ = 194057985600. Its totient is φ = 96708654528.

The previous prime is 145303132519. The next prime is 145303132553. The reversal of 145303132521 is 125231303541.

It is not a de Polignac number, because 145303132521 - 2¹ = 145303132519 is a prime.

It is a super-2 number, since 2×145303132521² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (145303132511) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4544890 + ... + 4576748.

It is an arithmetic number, because the mean of its divisors is an integer number (12128624100).

Almost surely, 2^145303132521 is an apocalyptic number.

It is an amenable number.

145303132521 is a deficient number, since it is larger than the sum of its proper divisors (48754853079).

145303132521 is a wasteful number, since it uses less digits than its factorization.

145303132521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34328.

The product of its (nonzero) digits is 10800, while the sum is 30.

The spelling of 145303132521 in words is "one hundred forty-five billion, three hundred three million, one hundred thirty-two thousand, five hundred twenty-one".