43117445477 has 2 divisors, whose sum is σ = 43117445478. Its totient is φ = 43117445476.

The previous prime is 43117445419. The next prime is 43117445507. The reversal of 43117445477 is 77454471134.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42390280321 + 727165156 = 205889^2 + 26966^2 .

It is a cyclic number.

It is not a de Polignac number, because 43117445477 - 2¹⁰ = 43117444453 is a prime.

It is a super-2 number, since 2×43117445477² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43117445417) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21558722738 + 21558722739.

It is an arithmetic number, because the mean of its divisors is an integer number (21558722739).

Almost surely, 2^43117445477 is an apocalyptic number.

It is an amenable number.

43117445477 is a deficient number, since it is larger than the sum of its proper divisors (1).

43117445477 is an equidigital number, since it uses as much as digits as its factorization.

43117445477 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1317120, while the sum is 47.

The spelling of 43117445477 in words is "forty-three billion, one hundred seventeen million, four hundred forty-five thousand, four hundred seventy-seven".