873000415981 has 2 divisors, whose sum is σ = 873000415982. Its totient is φ = 873000415980.

The previous prime is 873000415939. The next prime is 873000416027. The reversal of 873000415981 is 189514000378.

It is a happy number.

873000415981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an a-pointer prime, because the next prime (873000416027) can be obtained adding 873000415981 to its sum of digits (46).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 846199451881 + 26800964100 = 919891^2 + 163710^2 .

It is a cyclic number.

It is not a de Polignac number, because 873000415981 - 2⁷ = 873000415853 is a prime.

It is a super-2 number, since 2×873000415981² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (873000419981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 436500207990 + 436500207991.

It is an arithmetic number, because the mean of its divisors is an integer number (436500207991).

Almost surely, 2^873000415981 is an apocalyptic number.

It is an amenable number.

873000415981 is a deficient number, since it is larger than the sum of its proper divisors (1).

873000415981 is an equidigital number, since it uses as much as digits as its factorization.

873000415981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 241920, while the sum is 46.

The spelling of 873000415981 in words is "eight hundred seventy-three billion, four hundred fifteen thousand, nine hundred eighty-one".