155301030061081 has 2 divisors, whose sum is σ = 155301030061082. Its totient is φ = 155301030061080.

The previous prime is 155301030061063. The next prime is 155301030061127. The reversal of 155301030061081 is 180160030103551.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 152794321000000 + 2506709061081 = 12361000^2 + 1583259^2 .

It is a cyclic number.

It is not a de Polignac number, because 155301030061081 - 2⁹ = 155301030060569 is a prime.

It is a super-2 number, since 2×155301030061081² (a number of 29 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (155301030061481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 77650515030540 + 77650515030541.

It is an arithmetic number, because the mean of its divisors is an integer number (77650515030541).

Almost surely, 2^{155301030061081} is an apocalyptic number.

It is an amenable number.

155301030061081 is a deficient number, since it is larger than the sum of its proper divisors (1).

155301030061081 is an equidigital number, since it uses as much as digits as its factorization.

155301030061081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10800, while the sum is 34.

The spelling of 155301030061081 in words is "one hundred fifty-five trillion, three hundred one billion, thirty million, sixty-one thousand, eighty-one".