181150384007077 has 2 divisors, whose sum is σ = 181150384007078. Its totient is φ = 181150384007076.

The previous prime is 181150384007071. The next prime is 181150384007101. The reversal of 181150384007077 is 770700483051181.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 178308324129796 + 2842059877281 = 13353214^2 + 1685841^2 .

It is a cyclic number.

It is not a de Polignac number, because 181150384007077 - 2²³ = 181150375618469 is a prime.

It is a super-2 number, since 2×181150384007077² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (181150384007071) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 90575192003538 + 90575192003539.

It is an arithmetic number, because the mean of its divisors is an integer number (90575192003539).

Almost surely, 2^{181150384007077} is an apocalyptic number.

It is an amenable number.

181150384007077 is a deficient number, since it is larger than the sum of its proper divisors (1).

181150384007077 is an equidigital number, since it uses as much as digits as its factorization.

181150384007077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1317120, while the sum is 52.

The spelling of 181150384007077 in words is "one hundred eighty-one trillion, one hundred fifty billion, three hundred eighty-four million, seven thousand, seventy-seven".