32545151521 has 4 divisors (see below), whose sum is σ = 32571894852. Its totient is φ = 32518408192.

The previous prime is 32545151479. The next prime is 32545151557. The reversal of 32545151521 is 12515154523.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 12515154523 = 53 ⋅236134991.

It can be written as a sum of positive squares in 2 ways, for example, as 10385851921 + 22159299600 = 101911^2 + 148860^2 .

It is a cyclic number.

It is not a de Polignac number, because 32545151521 - 2¹¹ = 32545149473 is a prime.

It is a super-2 number, since 2×32545151521² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (32545151621) 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, 13369840 + ... + 13372273.

It is an arithmetic number, because the mean of its divisors is an integer number (8142973713).

Almost surely, 2^32545151521 is an apocalyptic number.

It is an amenable number.

32545151521 is a deficient number, since it is larger than the sum of its proper divisors (26743331).

32545151521 is a wasteful number, since it uses less digits than its factorization.

32545151521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26743330.

The product of its digits is 30000, while the sum is 34.

The spelling of 32545151521 in words is "thirty-two billion, five hundred forty-five million, one hundred fifty-one thousand, five hundred twenty-one".