87831417073 has 2 divisors, whose sum is σ = 87831417074. Its totient is φ = 87831417072.

The previous prime is 87831417067. The next prime is 87831417083. The reversal of 87831417073 is 37071413878.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74585248609 + 13246168464 = 273103^2 + 115092^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-87831417073 is a prime.

It is not a weakly prime, because it can be changed into another prime (87831417083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43915708536 + 43915708537.

It is an arithmetic number, because the mean of its divisors is an integer number (43915708537).

Almost surely, 2^87831417073 is an apocalyptic number.

It is an amenable number.

87831417073 is a deficient number, since it is larger than the sum of its proper divisors (1).

87831417073 is an equidigital number, since it uses as much as digits as its factorization.

87831417073 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 790272, while the sum is 49.

The spelling of 87831417073 in words is "eighty-seven billion, eight hundred thirty-one million, four hundred seventeen thousand, seventy-three".