1145168635081 has 2 divisors, whose sum is σ = 1145168635082. Its totient is φ = 1145168635080.

The previous prime is 1145168635069. The next prime is 1145168635291. The reversal of 1145168635081 is 1805368615411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1108566823225 + 36601811856 = 1052885^2 + 191316^2 .

It is a cyclic number.

It is not a de Polignac number, because 1145168635081 - 2²⁷ = 1145034417353 is a prime.

It is a super-2 number, since 2×1145168635081² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1145168636081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 572584317540 + 572584317541.

It is an arithmetic number, because the mean of its divisors is an integer number (572584317541).

Almost surely, 2^{1145168635081} is an apocalyptic number.

It is an amenable number.

1145168635081 is a deficient number, since it is larger than the sum of its proper divisors (1).

1145168635081 is an equidigital number, since it uses as much as digits as its factorization.

1145168635081 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 691200, while the sum is 49.

The spelling of 1145168635081 in words is "one trillion, one hundred forty-five billion, one hundred sixty-eight million, six hundred thirty-five thousand, eighty-one".