45171373201521 has 32 divisors (see below), whose sum is σ = 69323625861120. Its totient is φ = 25628468464704.

The previous prime is 45171373201499. The next prime is 45171373201601. The reversal of 45171373201521 is 12510237317154.

It is not a de Polignac number, because 45171373201521 - 2⁶ = 45171373201457 is a prime.

It is a super-3 number, since 3×45171373201521³ (a number of 42 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not an unprimeable number, because it can be changed into a prime (45171373201121) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 5667861 + ... + 11066498.

It is an arithmetic number, because the mean of its divisors is an integer number (2166363308160).

Almost surely, 2^{45171373201521} is an apocalyptic number.

It is an amenable number.

45171373201521 is a deficient number, since it is larger than the sum of its proper divisors (24152252659599).

45171373201521 is a wasteful number, since it uses less digits than its factorization.

45171373201521 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16735285.

The product of its (nonzero) digits is 176400, while the sum is 42.

The spelling of 45171373201521 in words is "forty-five trillion, one hundred seventy-one billion, three hundred seventy-three million, two hundred one thousand, five hundred twenty-one".