45578331562721 has 8 divisors (see below), whose sum is σ = 46767685396488. Its totient is φ = 44392677120000.

The previous prime is 45578331562717. The next prime is 45578331562763. The reversal of 45578331562721 is 12726513387554.

It can be written as a sum of positive squares in 4 ways, for example, as 7215965925025 + 38362365637696 = 2686255^2 + 6193736^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 45578331562721 - 2² = 45578331562717 is a prime.

It is a super-3 number, since 3×45578331562721³ (a number of 42 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (45578331562711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 924822800 + ... + 924872081.

It is an arithmetic number, because the mean of its divisors is an integer number (5845960674561).

Almost surely, 2^{45578331562721} is an apocalyptic number.

45578331562721 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

45578331562721 is a deficient number, since it is larger than the sum of its proper divisors (1189353833767).

45578331562721 is a wasteful number, since it uses less digits than its factorization.

45578331562721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1849695523.

The product of its digits is 42336000, while the sum is 59.

The spelling of 45578331562721 in words is "forty-five trillion, five hundred seventy-eight billion, three hundred thirty-one million, five hundred sixty-two thousand, seven hundred twenty-one".