73021057032 has 512 divisors, whose sum is σ = 257391820800. Its totient is φ = 16663449600.

The previous prime is 73021057027. The next prime is 73021057037. The reversal of 73021057032 is 23075012037.

It is an interprime number because it is at equal distance from previous prime (73021057027) and next prime (73021057037).

It is not an unprimeable number, because it can be changed into a prime (73021057037) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 42379323 + ... + 42381045.

It is an arithmetic number, because the mean of its divisors is an integer number (502718400).

Almost surely, 2^73021057032 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 73021057032, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (128695910400).

73021057032 is an abundant number, since it is smaller than the sum of its proper divisors (184370763768).

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

73021057032 is a wasteful number, since it uses less digits than its factorization.

73021057032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1857 (or 1853 counting only the distinct ones).

The product of its (nonzero) digits is 8820, while the sum is 30.

Adding to 73021057032 its reverse (23075012037), we get a palindrome (96096069069).

The spelling of 73021057032 in words is "seventy-three billion, twenty-one million, fifty-seven thousand, thirty-two".