181162270153 has 2 divisors, whose sum is σ = 181162270154. Its totient is φ = 181162270152.

The previous prime is 181162270139. The next prime is 181162270199. The reversal of 181162270153 is 351072261181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 166816698624 + 14345571529 = 408432^2 + 119773^2 .

It is a cyclic number.

It is not a de Polignac number, because 181162270153 - 2¹³ = 181162261961 is a prime.

It is not a weakly prime, because it can be changed into another prime (181162270123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90581135076 + 90581135077.

It is an arithmetic number, because the mean of its divisors is an integer number (90581135077).

Almost surely, 2^181162270153 is an apocalyptic number.

It is an amenable number.

181162270153 is a deficient number, since it is larger than the sum of its proper divisors (1).

181162270153 is an equidigital number, since it uses as much as digits as its factorization.

181162270153 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 37.

The spelling of 181162270153 in words is "one hundred eighty-one billion, one hundred sixty-two million, two hundred seventy thousand, one hundred fifty-three".