43091937601 has 2 divisors, whose sum is σ = 43091937602. Its totient is φ = 43091937600.

The previous prime is 43091937541. The next prime is 43091937617. The reversal of 43091937601 is 10673919034.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40787841600 + 2304096001 = 201960^2 + 48001^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43091937601 is a prime.

It is not a weakly prime, because it can be changed into another prime (43091937641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21545968800 + 21545968801.

It is an arithmetic number, because the mean of its divisors is an integer number (21545968801).

Almost surely, 2^43091937601 is an apocalyptic number.

It is an amenable number.

43091937601 is a deficient number, since it is larger than the sum of its proper divisors (1).

43091937601 is an equidigital number, since it uses as much as digits as its factorization.

43091937601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 122472, while the sum is 43.

The spelling of 43091937601 in words is "forty-three billion, ninety-one million, nine hundred thirty-seven thousand, six hundred one".