89999616015973 has 2 divisors, whose sum is σ = 89999616015974. Its totient is φ = 89999616015972.

The previous prime is 89999616015863. The next prime is 89999616016031. The reversal of 89999616015973 is 37951061699998.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70673243800644 + 19326372215329 = 8406738^2 + 4396177^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-89999616015973 is a prime.

It is a super-2 number, since 2×89999616015973² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (89999616915973) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44999808007986 + 44999808007987.

It is an arithmetic number, because the mean of its divisors is an integer number (44999808007987).

Almost surely, 2^{89999616015973} is an apocalyptic number.

It is an amenable number.

89999616015973 is a deficient number, since it is larger than the sum of its proper divisors (1).

89999616015973 is an equidigital number, since it uses as much as digits as its factorization.

89999616015973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1785641760, while the sum is 82.

The spelling of 89999616015973 in words is "eighty-nine trillion, nine hundred ninety-nine billion, six hundred sixteen million, fifteen thousand, nine hundred seventy-three".