43128803461 has 2 divisors, whose sum is σ = 43128803462. Its totient is φ = 43128803460.

The previous prime is 43128803453. The next prime is 43128803467. The reversal of 43128803461 is 16430882134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 32394600225 + 10734203236 = 179985^2 + 103606^2 .

It is a cyclic number.

It is not a de Polignac number, because 43128803461 - 2³ = 43128803453 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43128803467) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21564401730 + 21564401731.

It is an arithmetic number, because the mean of its divisors is an integer number (21564401731).

Almost surely, 2^43128803461 is an apocalyptic number.

It is an amenable number.

43128803461 is a deficient number, since it is larger than the sum of its proper divisors (1).

43128803461 is an equidigital number, since it uses as much as digits as its factorization.

43128803461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 110592, while the sum is 40.

The spelling of 43128803461 in words is "forty-three billion, one hundred twenty-eight million, eight hundred three thousand, four hundred sixty-one".