67665675157 has 2 divisors, whose sum is σ = 67665675158. Its totient is φ = 67665675156.

The previous prime is 67665675131. The next prime is 67665675173. The reversal of 67665675157 is 75157656676.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42716209041 + 24949466116 = 206679^2 + 157954^2 .

It is a cyclic number.

It is not a de Polignac number, because 67665675157 - 2¹⁹ = 67665150869 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67665675095 and 67665675104.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67665675197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33832837578 + 33832837579.

It is an arithmetic number, because the mean of its divisors is an integer number (33832837579).

Almost surely, 2^67665675157 is an apocalyptic number.

It is an amenable number.

67665675157 is a deficient number, since it is larger than the sum of its proper divisors (1).

67665675157 is an equidigital number, since it uses as much as digits as its factorization.

67665675157 is an evil number, because the sum of its binary digits is even.

The product of its digits is 55566000, while the sum is 61.

The spelling of 67665675157 in words is "sixty-seven billion, six hundred sixty-five million, six hundred seventy-five thousand, one hundred fifty-seven".