102078161761 has 2 divisors, whose sum is σ = 102078161762. Its totient is φ = 102078161760.

The previous prime is 102078161753. The next prime is 102078161771. The reversal of 102078161761 is 167161870201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 97254164736 + 4823997025 = 311856^2 + 69455^2 .

It is a cyclic number.

It is not a de Polignac number, because 102078161761 - 2³ = 102078161753 is a prime.

It is a super-2 number, since 2×102078161761² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (102078161771) 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, 51039080880 + 51039080881.

It is an arithmetic number, because the mean of its divisors is an integer number (51039080881).

Almost surely, 2^102078161761 is an apocalyptic number.

It is an amenable number.

102078161761 is a deficient number, since it is larger than the sum of its proper divisors (1).

102078161761 is an equidigital number, since it uses as much as digits as its factorization.

102078161761 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 28224, while the sum is 40.

The spelling of 102078161761 in words is "one hundred two billion, seventy-eight million, one hundred sixty-one thousand, seven hundred sixty-one".