667400080157 has 2 divisors, whose sum is σ = 667400080158. Its totient is φ = 667400080156.

The previous prime is 667400080069. The next prime is 667400080183. The reversal of 667400080157 is 751080004766.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 664234780036 + 3165300121 = 815006^2 + 56261^2 .

It is a cyclic number.

It is not a de Polignac number, because 667400080157 - 2⁸ = 667400079901 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (667400080957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 333700040078 + 333700040079.

It is an arithmetic number, because the mean of its divisors is an integer number (333700040079).

Almost surely, 2^667400080157 is an apocalyptic number.

It is an amenable number.

667400080157 is a deficient number, since it is larger than the sum of its proper divisors (1).

667400080157 is an equidigital number, since it uses as much as digits as its factorization.

667400080157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 282240, while the sum is 44.

The spelling of 667400080157 in words is "six hundred sixty-seven billion, four hundred million, eighty thousand, one hundred fifty-seven".