173112071537 has 2 divisors, whose sum is σ = 173112071538. Its totient is φ = 173112071536.

The previous prime is 173112071477. The next prime is 173112071599. The reversal of 173112071537 is 735170211371.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172990278241 + 121793296 = 415921^2 + 11036^2 .

It is a cyclic number.

It is not a de Polignac number, because 173112071537 - 2²⁰ = 173111022961 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 173112071537.

It is not a weakly prime, because it can be changed into another prime (173112071137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 86556035768 + 86556035769.

It is an arithmetic number, because the mean of its divisors is an integer number (86556035769).

Almost surely, 2^173112071537 is an apocalyptic number.

It is an amenable number.

173112071537 is a deficient number, since it is larger than the sum of its proper divisors (1).

173112071537 is an equidigital number, since it uses as much as digits as its factorization.

173112071537 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30870, while the sum is 38.

The spelling of 173112071537 in words is "one hundred seventy-three billion, one hundred twelve million, seventy-one thousand, five hundred thirty-seven".