157667757109 has 2 divisors, whose sum is σ = 157667757110. Its totient is φ = 157667757108.

The previous prime is 157667757103. The next prime is 157667757139. The reversal of 157667757109 is 901757766751.

157667757109 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 157646320209 + 21436900 = 397047^2 + 4630^2 .

It is a cyclic number.

It is not a de Polignac number, because 157667757109 - 2¹⁷ = 157667626037 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (157667757103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 78833878554 + 78833878555.

It is an arithmetic number, because the mean of its divisors is an integer number (78833878555).

Almost surely, 2^157667757109 is an apocalyptic number.

It is an amenable number.

157667757109 is a deficient number, since it is larger than the sum of its proper divisors (1).

157667757109 is an equidigital number, since it uses as much as digits as its factorization.

157667757109 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19448100, while the sum is 61.

The spelling of 157667757109 in words is "one hundred fifty-seven billion, six hundred sixty-seven million, seven hundred fifty-seven thousand, one hundred nine".