43026561497 has 2 divisors, whose sum is σ = 43026561498. Its totient is φ = 43026561496.

The previous prime is 43026561493. The next prime is 43026561547. The reversal of 43026561497 is 79416562034.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 32264781376 + 10761780121 = 179624^2 + 103739^2 .

It is a cyclic number.

It is not a de Polignac number, because 43026561497 - 2² = 43026561493 is a prime.

It is not a weakly prime, because it can be changed into another prime (43026561493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21513280748 + 21513280749.

It is an arithmetic number, because the mean of its divisors is an integer number (21513280749).

Almost surely, 2^43026561497 is an apocalyptic number.

It is an amenable number.

43026561497 is a deficient number, since it is larger than the sum of its proper divisors (1).

43026561497 is an equidigital number, since it uses as much as digits as its factorization.

43026561497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1088640, while the sum is 47.

The spelling of 43026561497 in words is "forty-three billion, twenty-six million, five hundred sixty-one thousand, four hundred ninety-seven".