43695266551 has 2 divisors, whose sum is σ = 43695266552. Its totient is φ = 43695266550.

The previous prime is 43695266521. The next prime is 43695266603. The reversal of 43695266551 is 15566259634.

It is an a-pointer prime, because the next prime (43695266603) can be obtained adding 43695266551 to its sum of digits (52).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 43695266551 - 2³⁵ = 9335528183 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43695266521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21847633275 + 21847633276.

It is an arithmetic number, because the mean of its divisors is an integer number (21847633276).

Almost surely, 2^43695266551 is an apocalyptic number.

43695266551 is a deficient number, since it is larger than the sum of its proper divisors (1).

43695266551 is an equidigital number, since it uses as much as digits as its factorization.

43695266551 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5832000, while the sum is 52.

The spelling of 43695266551 in words is "forty-three billion, six hundred ninety-five million, two hundred sixty-six thousand, five hundred fifty-one".