87543538288433 has 2 divisors, whose sum is σ = 87543538288434. Its totient is φ = 87543538288432.

The previous prime is 87543538288319. The next prime is 87543538288439. The reversal of 87543538288433 is 33488283534578.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 87016677162529 + 526861125904 = 9328273^2 + 725852^2 .

It is a cyclic number.

It is not a de Polignac number, because 87543538288433 - 2¹⁶ = 87543538222897 is a prime.

It is not a weakly prime, because it can be changed into another prime (87543538288439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43771769144216 + 43771769144217.

It is an arithmetic number, because the mean of its divisors is an integer number (43771769144217).

Almost surely, 2^{87543538288433} is an apocalyptic number.

It is an amenable number.

87543538288433 is a deficient number, since it is larger than the sum of its proper divisors (1).

87543538288433 is an equidigital number, since it uses as much as digits as its factorization.

87543538288433 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1857945600, while the sum is 71.

The spelling of 87543538288433 in words is "eighty-seven trillion, five hundred forty-three billion, five hundred thirty-eight million, two hundred eighty-eight thousand, four hundred thirty-three".