43061602121 has 6 divisors (see below), whose sum is σ = 43483745610. Its totient is φ = 42643517808.

The previous prime is 43061602097. The next prime is 43061602159. The reversal of 43061602121 is 12120616034.

43061602121 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 38783788096 + 4277814025 = 196936^2 + 65405^2 .

It is a de Polignac number, because none of the positive numbers 2^k-43061602121 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (43061632121) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2018876 + ... + 2040093.

It is an arithmetic number, because the mean of its divisors is an integer number (7247290935).

Almost surely, 2^43061602121 is an apocalyptic number.

It is an amenable number.

43061602121 is a deficient number, since it is larger than the sum of its proper divisors (422143489).

43061602121 is an equidigital number, since it uses as much as digits as its factorization.

43061602121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4059175 (or 4059072 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 26.

The spelling of 43061602121 in words is "forty-three billion, sixty-one million, six hundred two thousand, one hundred twenty-one".