87348695557 has 2 divisors, whose sum is σ = 87348695558. Its totient is φ = 87348695556.

The previous prime is 87348695531. The next prime is 87348695587. The reversal of 87348695557 is 75559684378.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 75928353601 + 11420341956 = 275551^2 + 106866^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87348695557 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 87348695492 and 87348695501.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (87348695587) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43674347778 + 43674347779.

It is an arithmetic number, because the mean of its divisors is an integer number (43674347779).

Almost surely, 2^87348695557 is an apocalyptic number.

It is an amenable number.

87348695557 is a deficient number, since it is larger than the sum of its proper divisors (1).

87348695557 is an equidigital number, since it uses as much as digits as its factorization.

87348695557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 254016000, while the sum is 67.

The spelling of 87348695557 in words is "eighty-seven billion, three hundred forty-eight million, six hundred ninety-five thousand, five hundred fifty-seven".