73649091887 has 16 divisors (see below), whose sum is σ = 85716403200. Its totient is φ = 61971269280.

The previous prime is 73649091851. The next prime is 73649091899. The reversal of 73649091887 is 78819094637.

It is a cyclic number.

It is not a de Polignac number, because 73649091887 - 2¹⁰ = 73649090863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73649091827) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 172937 + ... + 420957.

It is an arithmetic number, because the mean of its divisors is an integer number (5357275200).

Almost surely, 2^73649091887 is an apocalyptic number.

73649091887 is a deficient number, since it is larger than the sum of its proper divisors (12067311313).

73649091887 is a wasteful number, since it uses less digits than its factorization.

73649091887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248806.

The product of its (nonzero) digits is 18289152, while the sum is 62.

The spelling of 73649091887 in words is "seventy-three billion, six hundred forty-nine million, ninety-one thousand, eight hundred eighty-seven".