104177072981 has 2 divisors, whose sum is σ = 104177072982. Its totient is φ = 104177072980.

The previous prime is 104177072977. The next prime is 104177073019. The reversal of 104177072981 is 189270771401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 85477877956 + 18699195025 = 292366^2 + 136745^2 .

It is an emirp because it is prime and its reverse (189270771401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 104177072981 - 2² = 104177072977 is a prime.

It is a super-2 number, since 2×104177072981² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104177072081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52088536490 + 52088536491.

It is an arithmetic number, because the mean of its divisors is an integer number (52088536491).

Almost surely, 2^104177072981 is an apocalyptic number.

It is an amenable number.

104177072981 is a deficient number, since it is larger than the sum of its proper divisors (1).

104177072981 is an equidigital number, since it uses as much as digits as its factorization.

104177072981 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 197568, while the sum is 47.

The spelling of 104177072981 in words is "one hundred four billion, one hundred seventy-seven million, seventy-two thousand, nine hundred eighty-one".