87450909457 has 2 divisors, whose sum is σ = 87450909458. Its totient is φ = 87450909456.

The previous prime is 87450909443. The next prime is 87450909463. The reversal of 87450909457 is 75490905478.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 55223120016 + 32227789441 = 234996^2 + 179521^2 .

It is a cyclic number.

It is not a de Polignac number, because 87450909457 - 2²⁷ = 87316691729 is a prime.

It is not a weakly prime, because it can be changed into another prime (87450909407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43725454728 + 43725454729.

It is an arithmetic number, because the mean of its divisors is an integer number (43725454729).

Almost surely, 2^87450909457 is an apocalyptic number.

It is an amenable number.

87450909457 is a deficient number, since it is larger than the sum of its proper divisors (1).

87450909457 is an equidigital number, since it uses as much as digits as its factorization.

87450909457 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12700800, while the sum is 58.

The spelling of 87450909457 in words is "eighty-seven billion, four hundred fifty million, nine hundred nine thousand, four hundred fifty-seven".