43768633457 has 2 divisors, whose sum is σ = 43768633458. Its totient is φ = 43768633456.

The previous prime is 43768633411. The next prime is 43768633499. The reversal of 43768633457 is 75433686734.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34840462336 + 8928171121 = 186656^2 + 94489^2 .

It is a cyclic number.

It is not a de Polignac number, because 43768633457 - 2¹² = 43768629361 is a prime.

It is not a weakly prime, because it can be changed into another prime (43768633057) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21884316728 + 21884316729.

It is an arithmetic number, because the mean of its divisors is an integer number (21884316729).

Almost surely, 2^43768633457 is an apocalyptic number.

It is an amenable number.

43768633457 is a deficient number, since it is larger than the sum of its proper divisors (1).

43768633457 is an equidigital number, since it uses as much as digits as its factorization.

43768633457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30481920, while the sum is 56.

The spelling of 43768633457 in words is "forty-three billion, seven hundred sixty-eight million, six hundred thirty-three thousand, four hundred fifty-seven".