73124559649 has 4 divisors (see below), whose sum is σ = 73238284336. Its totient is φ = 73010834964.

The previous prime is 73124559637. The next prime is 73124559659. The reversal of 73124559649 is 94695542137.

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-73124559649 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 73124559649.

It is not an unprimeable number, because it can be changed into a prime (73124559619) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 56861379 + ... + 56862664.

It is an arithmetic number, because the mean of its divisors is an integer number (18309571084).

Almost surely, 2^73124559649 is an apocalyptic number.

It is an amenable number.

73124559649 is a deficient number, since it is larger than the sum of its proper divisors (113724687).

73124559649 is a wasteful number, since it uses less digits than its factorization.

73124559649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113724686.

The product of its digits is 8164800, while the sum is 55.

The spelling of 73124559649 in words is "seventy-three billion, one hundred twenty-four million, five hundred fifty-nine thousand, six hundred forty-nine".