73649894637 has 8 divisors (see below), whose sum is σ = 107127119520. Its totient is φ = 44636299760.

The previous prime is 73649894629. The next prime is 73649894657.

It is a happy number.

73649894637 is nontrivially palindromic in base 10.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 73649894637 - 2³ = 73649894629 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73649894657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1115907462 + ... + 1115907527.

It is an arithmetic number, because the mean of its divisors is an integer number (13390889940).

Almost surely, 2^73649894637 is an apocalyptic number.

It is an amenable number.

73649894637 is a deficient number, since it is larger than the sum of its proper divisors (33477224883).

73649894637 is a wasteful number, since it uses less digits than its factorization.

73649894637 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2231815003.

The product of its digits is 164602368, while the sum is 66.

The spelling of 73649894637 in words is "seventy-three billion, six hundred forty-nine million, eight hundred ninety-four thousand, six hundred thirty-seven".