73085715145 has 4 divisors (see below), whose sum is σ = 87702858180. Its totient is φ = 58468572112.

The previous prime is 73085715137. The next prime is 73085715203. The reversal of 73085715145 is 54151758037.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 23699986704 + 49385728441 = 153948^2 + 222229^2 .

It is a cyclic number.

It is not a de Polignac number, because 73085715145 - 2³ = 73085715137 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 73085715095 and 73085715104.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7308571510 + ... + 7308571519.

It is an arithmetic number, because the mean of its divisors is an integer number (21925714545).

Almost surely, 2^73085715145 is an apocalyptic number.

It is an amenable number.

73085715145 is a deficient number, since it is larger than the sum of its proper divisors (14617143035).

73085715145 is a wasteful number, since it uses less digits than its factorization.

73085715145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14617143034.

The product of its (nonzero) digits is 588000, while the sum is 46.

The spelling of 73085715145 in words is "seventy-three billion, eighty-five million, seven hundred fifteen thousand, one hundred forty-five".