67948698557 has 2 divisors, whose sum is σ = 67948698558. Its totient is φ = 67948698556.

The previous prime is 67948698527. The next prime is 67948698569. The reversal of 67948698557 is 75589684976.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 50424498916 + 17524199641 = 224554^2 + 132379^2 .

It is a cyclic number.

It is not a de Polignac number, because 67948698557 - 2¹⁰ = 67948697533 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67948698527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33974349278 + 33974349279.

It is an arithmetic number, because the mean of its divisors is an integer number (33974349279).

Almost surely, 2^67948698557 is an apocalyptic number.

It is an amenable number.

67948698557 is a deficient number, since it is larger than the sum of its proper divisors (1).

67948698557 is an equidigital number, since it uses as much as digits as its factorization.

67948698557 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 914457600, while the sum is 74.

The spelling of 67948698557 in words is "sixty-seven billion, nine hundred forty-eight million, six hundred ninety-eight thousand, five hundred fifty-seven".