43020688321 has 8 divisors (see below), whose sum is σ = 47459971944. Its totient is φ = 38742833280.

The previous prime is 43020688301. The next prime is 43020688357. The reversal of 43020688321 is 12388602034.

It can be written as a sum of positive squares in 4 ways, for example, as 8786437696 + 34234250625 = 93736^2 + 185025^2 .

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 43020688321 - 2¹¹ = 43020686273 is a prime.

It is a super-2 number, since 2×43020688321² (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 (43020688301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 40356586 + ... + 40357651.

It is an arithmetic number, because the mean of its divisors is an integer number (5932496493).

Almost surely, 2^43020688321 is an apocalyptic number.

43020688321 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

43020688321 is a deficient number, since it is larger than the sum of its proper divisors (4439283623).

43020688321 is a wasteful number, since it uses less digits than its factorization.

43020688321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 80714291.

The product of its (nonzero) digits is 55296, while the sum is 37.

The spelling of 43020688321 in words is "forty-three billion, twenty million, six hundred eighty-eight thousand, three hundred twenty-one".