43020511361 has 24 divisors (see below), whose sum is σ = 46126716840. Its totient is φ = 40074101760.

The previous prime is 43020511349. The next prime is 43020511381. The reversal of 43020511361 is 16311502034.

It can be written as a sum of positive squares in 4 ways, for example, as 6376980736 + 36643530625 = 79856^2 + 191425^2 .

It is not a de Polignac number, because 43020511361 - 2⁶ = 43020511297 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 43020511361.

It is not an unprimeable number, because it can be changed into a prime (43020511381) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9835571 + ... + 9839943.

It is an arithmetic number, because the mean of its divisors is an integer number (1921946535).

Almost surely, 2^43020511361 is an apocalyptic number.

It is an amenable number.

43020511361 is a deficient number, since it is larger than the sum of its proper divisors (3106205479).

43020511361 is a wasteful number, since it uses less digits than its factorization.

43020511361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4817 (or 4786 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 26.

The spelling of 43020511361 in words is "forty-three billion, twenty million, five hundred eleven thousand, three hundred sixty-one".