87034639777 has 2 divisors, whose sum is σ = 87034639778. Its totient is φ = 87034639776.

The previous prime is 87034639729. The next prime is 87034639799. The reversal of 87034639777 is 77793643078.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50963514001 + 36071125776 = 225751^2 + 189924^2 .

It is a cyclic number.

It is not a de Polignac number, because 87034639777 - 2¹⁹ = 87034115489 is a prime.

It is a super-2 number, since 2×87034639777² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (87034639277) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43517319888 + 43517319889.

It is an arithmetic number, because the mean of its divisors is an integer number (43517319889).

Almost surely, 2^87034639777 is an apocalyptic number.

It is an amenable number.

87034639777 is a deficient number, since it is larger than the sum of its proper divisors (1).

87034639777 is an equidigital number, since it uses as much as digits as its factorization.

87034639777 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 37340352, while the sum is 61.

The spelling of 87034639777 in words is "eighty-seven billion, thirty-four million, six hundred thirty-nine thousand, seven hundred seventy-seven".