43698658481 has 2 divisors, whose sum is σ = 43698658482. Its totient is φ = 43698658480.

The previous prime is 43698658441. The next prime is 43698658501. The reversal of 43698658481 is 18485689634.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 43470165025 + 228493456 = 208495^2 + 15116^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-43698658481 is a prime.

It is a super-2 number, since 2×43698658481² (a number of 22 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (43698658411) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21849329240 + 21849329241.

It is an arithmetic number, because the mean of its divisors is an integer number (21849329241).

Almost surely, 2^43698658481 is an apocalyptic number.

It is an amenable number.

43698658481 is a deficient number, since it is larger than the sum of its proper divisors (1).

43698658481 is an equidigital number, since it uses as much as digits as its factorization.

43698658481 is an evil number, because the sum of its binary digits is even.

The product of its digits is 39813120, while the sum is 62.

The spelling of 43698658481 in words is "forty-three billion, six hundred ninety-eight million, six hundred fifty-eight thousand, four hundred eighty-one".