43115359477 has 2 divisors, whose sum is σ = 43115359478. Its totient is φ = 43115359476.

The previous prime is 43115359471. The next prime is 43115359517. The reversal of 43115359477 is 77495351134.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40903444516 + 2211914961 = 202246^2 + 47031^2 .

It is a cyclic number.

It is not a de Polignac number, because 43115359477 - 2⁷ = 43115359349 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 43115359477.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (43115359471) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21557679738 + 21557679739.

It is an arithmetic number, because the mean of its divisors is an integer number (21557679739).

Almost surely, 2^43115359477 is an apocalyptic number.

It is an amenable number.

43115359477 is a deficient number, since it is larger than the sum of its proper divisors (1).

43115359477 is an equidigital number, since it uses as much as digits as its factorization.

43115359477 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1587600, while the sum is 49.

The spelling of 43115359477 in words is "forty-three billion, one hundred fifteen million, three hundred fifty-nine thousand, four hundred seventy-seven".