73106660137 has 4 divisors (see below), whose sum is σ = 83550468736. Its totient is φ = 62662851540.

The previous prime is 73106660131. The next prime is 73106660149.

It is a happy number.

73106660137 is nontrivially palindromic in base 10.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73106660137 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 73106660137.

It is not an unprimeable number, because it can be changed into a prime (73106660131) 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, 5221904289 + ... + 5221904302.

It is an arithmetic number, because the mean of its divisors is an integer number (20887617184).

Almost surely, 2^73106660137 is an apocalyptic number.

It is an amenable number.

73106660137 is a deficient number, since it is larger than the sum of its proper divisors (10443808599).

73106660137 is a wasteful number, since it uses less digits than its factorization.

73106660137 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10443808598.

The product of its (nonzero) digits is 95256, while the sum is 40.

The spelling of 73106660137 in words is "seventy-three billion, one hundred six million, six hundred sixty thousand, one hundred thirty-seven".