45509729201 has 4 divisors (see below), whose sum is σ = 45550040100. Its totient is φ = 45469418304.

The previous prime is 45509729191. The next prime is 45509729227. The reversal of 45509729201 is 10292790554.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 13782994801 + 31726734400 = 117401^2 + 178120^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-45509729201 is a prime.

It is a super-2 number, since 2×45509729201² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (45509729281) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20153756 + ... + 20156013.

It is an arithmetic number, because the mean of its divisors is an integer number (11387510025).

Almost surely, 2^45509729201 is an apocalyptic number.

It is an amenable number.

45509729201 is a deficient number, since it is larger than the sum of its proper divisors (40310899).

45509729201 is a wasteful number, since it uses less digits than its factorization.

45509729201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40310898.

The product of its (nonzero) digits is 226800, while the sum is 44.

The spelling of 45509729201 in words is "forty-five billion, five hundred nine million, seven hundred twenty-nine thousand, two hundred one".