67619698961 has 2 divisors, whose sum is σ = 67619698962. Its totient is φ = 67619698960.

The previous prime is 67619698919. The next prime is 67619698969. The reversal of 67619698961 is 16989691676.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62460006400 + 5159692561 = 249920^2 + 71831^2 .

It is a cyclic number.

It is not a de Polignac number, because 67619698961 - 2⁶ = 67619698897 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67619698891 and 67619698900.

It is not a weakly prime, because it can be changed into another prime (67619698969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33809849480 + 33809849481.

It is an arithmetic number, because the mean of its divisors is an integer number (33809849481).

Almost surely, 2^67619698961 is an apocalyptic number.

It is an amenable number.

67619698961 is a deficient number, since it is larger than the sum of its proper divisors (1).

67619698961 is an equidigital number, since it uses as much as digits as its factorization.

67619698961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 52907904, while the sum is 68.

The spelling of 67619698961 in words is "sixty-seven billion, six hundred nineteen million, six hundred ninety-eight thousand, nine hundred sixty-one".