43956956957 has 2 divisors, whose sum is σ = 43956956958. Its totient is φ = 43956956956.

The previous prime is 43956956929. The next prime is 43956956963. The reversal of 43956956957 is 75965965934.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39714909796 + 4242047161 = 199286^2 + 65131^2 .

It is a cyclic number.

It is not a de Polignac number, because 43956956957 - 2³⁴ = 26777087773 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43956956557) 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, 21978478478 + 21978478479.

It is an arithmetic number, because the mean of its divisors is an integer number (21978478479).

Almost surely, 2^43956956957 is an apocalyptic number.

It is an amenable number.

43956956957 is a deficient number, since it is larger than the sum of its proper divisors (1).

43956956957 is an equidigital number, since it uses as much as digits as its factorization.

43956956957 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 275562000, while the sum is 68.

The spelling of 43956956957 in words is "forty-three billion, nine hundred fifty-six million, nine hundred fifty-six thousand, nine hundred fifty-seven".