73698120640 has 112 divisors (see below), whose sum is σ = 179389625472. Its totient is φ = 28825952256.

The previous prime is 73698120611. The next prime is 73698120659. The reversal of 73698120640 is 4602189637.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 32139334 + ... + 32141626.

Almost surely, 2^73698120640 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 73698120640, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (89694812736).

73698120640 is an abundant number, since it is smaller than the sum of its proper divisors (105691504832).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

73698120640 is a wasteful number, since it uses less digits than its factorization.

73698120640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4494 (or 4484 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 73698120640 in words is "seventy-three billion, six hundred ninety-eight million, one hundred twenty thousand, six hundred forty".