73567130561 has 4 divisors (see below), whose sum is σ = 73578086400. Its totient is φ = 73556174724.

The previous prime is 73567130509. The next prime is 73567130587. The reversal of 73567130561 is 16503176537.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 16503176537 = 29 ⋅569075053.

It is a cyclic number.

It is not a de Polignac number, because 73567130561 - 2²² = 73562936257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73567130501) 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, 5467841 + ... + 5481278.

It is an arithmetic number, because the mean of its divisors is an integer number (18394521600).

Almost surely, 2^73567130561 is an apocalyptic number.

It is an amenable number.

73567130561 is a deficient number, since it is larger than the sum of its proper divisors (10955839).

73567130561 is a wasteful number, since it uses less digits than its factorization.

73567130561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10955838.

The product of its (nonzero) digits is 396900, while the sum is 44.

The spelling of 73567130561 in words is "seventy-three billion, five hundred sixty-seven million, one hundred thirty thousand, five hundred sixty-one".