73453630072 has 8 divisors (see below), whose sum is σ = 137725556400. Its totient is φ = 36726815032.

The previous prime is 73453630069. The next prime is 73453630091. The reversal of 73453630072 is 27003635437.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 4590851872 + ... + 4590851887.

It is an arithmetic number, because the mean of its divisors is an integer number (17215694550).

Almost surely, 2^73453630072 is an apocalyptic number.

It is an amenable number.

73453630072 is a deficient number, since it is larger than the sum of its proper divisors (64271926328).

73453630072 is a wasteful number, since it uses less digits than its factorization.

73453630072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9181703765 (or 9181703761 counting only the distinct ones).

The product of its (nonzero) digits is 317520, while the sum is 40.

The spelling of 73453630072 in words is "seventy-three billion, four hundred fifty-three million, six hundred thirty thousand, seventy-two".