67811458157 has 2 divisors, whose sum is σ = 67811458158. Its totient is φ = 67811458156.

The previous prime is 67811458097. The next prime is 67811458171. The reversal of 67811458157 is 75185411876.

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., 54097642921 + 13713815236 = 232589^2 + 117106^2 .

It is a cyclic number.

It is not a de Polignac number, because 67811458157 - 2³² = 63516490861 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 67811458099 and 67811458108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (67811458177) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33905729078 + 33905729079.

It is an arithmetic number, because the mean of its divisors is an integer number (33905729079).

Almost surely, 2^67811458157 is an apocalyptic number.

It is an amenable number.

67811458157 is a deficient number, since it is larger than the sum of its proper divisors (1).

67811458157 is an equidigital number, since it uses as much as digits as its factorization.

67811458157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1881600, while the sum is 53.

The spelling of 67811458157 in words is "sixty-seven billion, eight hundred eleven million, four hundred fifty-eight thousand, one hundred fifty-seven".