87873362641 has 2 divisors, whose sum is σ = 87873362642. Its totient is φ = 87873362640.

The previous prime is 87873362623. The next prime is 87873362653. The reversal of 87873362641 is 14626337878.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 81726802641 + 6146560000 = 285879^2 + 78400^2 .

It is a cyclic number.

It is not a de Polignac number, because 87873362641 - 2³¹ = 85725878993 is a prime.

It is not a weakly prime, because it can be changed into another prime (87873362671) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43936681320 + 43936681321.

It is an arithmetic number, because the mean of its divisors is an integer number (43936681321).

Almost surely, 2^87873362641 is an apocalyptic number.

It is an amenable number.

87873362641 is a deficient number, since it is larger than the sum of its proper divisors (1).

87873362641 is an equidigital number, since it uses as much as digits as its factorization.

87873362641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8128512, while the sum is 55.

The spelling of 87873362641 in words is "eighty-seven billion, eight hundred seventy-three million, three hundred sixty-two thousand, six hundred forty-one".