43215350977 has 2 divisors, whose sum is σ = 43215350978. Its totient is φ = 43215350976.

The previous prime is 43215350953. The next prime is 43215350987. The reversal of 43215350977 is 77905351234.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23255030016 + 19960320961 = 152496^2 + 141281^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43215350977 is a prime.

It is not a weakly prime, because it can be changed into another prime (43215350947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21607675488 + 21607675489.

It is an arithmetic number, because the mean of its divisors is an integer number (21607675489).

Almost surely, 2^43215350977 is an apocalyptic number.

It is an amenable number.

43215350977 is a deficient number, since it is larger than the sum of its proper divisors (1).

43215350977 is an equidigital number, since it uses as much as digits as its factorization.

43215350977 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 793800, while the sum is 46.

The spelling of 43215350977 in words is "forty-three billion, two hundred fifteen million, three hundred fifty thousand, nine hundred seventy-seven".