73120432012 has 12 divisors (see below), whose sum is σ = 127963248336. Its totient is φ = 36559503920.

The previous prime is 73120431971. The next prime is 73120432019. The reversal of 73120432012 is 21023402137.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (73120432019) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 101937 + ... + 395767.

It is an arithmetic number, because the mean of its divisors is an integer number (10663604028).

Almost surely, 2^73120432012 is an apocalyptic number.

It is an amenable number.

73120432012 is a deficient number, since it is larger than the sum of its proper divisors (54842816324).

73120432012 is a wasteful number, since it uses less digits than its factorization.

73120432012 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 356048 (or 356046 counting only the distinct ones).

The product of its (nonzero) digits is 2016, while the sum is 25.

Adding to 73120432012 its reverse (21023402137), we get a palindrome (94143834149).

The spelling of 73120432012 in words is "seventy-three billion, one hundred twenty million, four hundred thirty-two thousand, twelve".