87934218473 has 2 divisors, whose sum is σ = 87934218474. Its totient is φ = 87934218472.

The previous prime is 87934218469. The next prime is 87934218509. The reversal of 87934218473 is 37481243978.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 49812436969 + 38121781504 = 223187^2 + 195248^2 .

It is a cyclic number.

It is not a de Polignac number, because 87934218473 - 2² = 87934218469 is a prime.

It is not a weakly prime, because it can be changed into another prime (87934212473) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43967109236 + 43967109237.

It is an arithmetic number, because the mean of its divisors is an integer number (43967109237).

Almost surely, 2^87934218473 is an apocalyptic number.

It is an amenable number.

87934218473 is a deficient number, since it is larger than the sum of its proper divisors (1).

87934218473 is an equidigital number, since it uses as much as digits as its factorization.

87934218473 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8128512, while the sum is 56.

The spelling of 87934218473 in words is "eighty-seven billion, nine hundred thirty-four million, two hundred eighteen thousand, four hundred seventy-three".