73512313873 has 4 divisors (see below), whose sum is σ = 73514638260. Its totient is φ = 73509989488.

The previous prime is 73512313871. The next prime is 73512313891. The reversal of 73512313873 is 37831321537.

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 69977179024 + 3535134849 = 264532^2 + 59457^2 .

It is a cyclic number.

It is not a de Polignac number, because 73512313873 - 2¹ = 73512313871 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73512313871) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1114090 + ... + 1178227.

It is an arithmetic number, because the mean of its divisors is an integer number (18378659565).

Almost surely, 2^73512313873 is an apocalyptic number.

It is an amenable number.

73512313873 is a deficient number, since it is larger than the sum of its proper divisors (2324387).

73512313873 is a wasteful number, since it uses less digits than its factorization.

73512313873 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2324386.

The product of its digits is 317520, while the sum is 43.

The spelling of 73512313873 in words is "seventy-three billion, five hundred twelve million, three hundred thirteen thousand, eight hundred seventy-three".