16157581157 has 2 divisors, whose sum is σ = 16157581158. Its totient is φ = 16157581156.

The previous prime is 16157581127. The next prime is 16157581249. The reversal of 16157581157 is 75118575161.

16157581157 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., 14798479201 + 1359101956 = 121649^2 + 36866^2 .

It is a cyclic number.

It is not a de Polignac number, because 16157581157 - 2⁶ = 16157581093 is a prime.

It is a super-2 number, since 2×16157581157² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (16157581127) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8078790578 + 8078790579.

It is an arithmetic number, because the mean of its divisors is an integer number (8078790579).

Almost surely, 2^16157581157 is an apocalyptic number.

It is an amenable number.

16157581157 is a deficient number, since it is larger than the sum of its proper divisors (1).

16157581157 is an equidigital number, since it uses as much as digits as its factorization.

16157581157 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 294000, while the sum is 47.

The spelling of 16157581157 in words is "sixteen billion, one hundred fifty-seven million, five hundred eighty-one thousand, one hundred fifty-seven".