73021011640 has 16 divisors (see below), whose sum is σ = 164297276280. Its totient is φ = 29208404640.

The previous prime is 73021011631. The next prime is 73021011647. The reversal of 73021011640 is 4611012037.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (73021011647) 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, 912762606 + ... + 912762685.

Almost surely, 2^73021011640 is an apocalyptic number.

It is an amenable number.

73021011640 is an abundant number, since it is smaller than the sum of its proper divisors (91276264640).

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

73021011640 is a wasteful number, since it uses less digits than its factorization.

73021011640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1825525302 (or 1825525298 counting only the distinct ones).

The product of its (nonzero) digits is 1008, while the sum is 25.

Adding to 73021011640 its reverse (4611012037), we get a palindrome (77632023677).

The spelling of 73021011640 in words is "seventy-three billion, twenty-one million, eleven thousand, six hundred forty".