73666513163575 has 12 divisors (see below), whose sum is σ = 91346583241368. Its totient is φ = 58933141551200.

The previous prime is 73666513163569. The next prime is 73666513163603. The reversal of 73666513163575 is 57536131566637.

It is not a de Polignac number, because 73666513163575 - 2⁵ = 73666513163543 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 38043549 + ... + 39933001.

It is an arithmetic number, because the mean of its divisors is an integer number (7612215270114).

Almost surely, 2^{73666513163575} is an apocalyptic number.

73666513163575 is a deficient number, since it is larger than the sum of its proper divisors (17680070077793).

73666513163575 is a wasteful number, since it uses less digits than its factorization.

73666513163575 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3448994 (or 3448989 counting only the distinct ones).

The product of its digits is 214326000, while the sum is 64.

The spelling of 73666513163575 in words is "seventy-three trillion, six hundred sixty-six billion, five hundred thirteen million, one hundred sixty-three thousand, five hundred seventy-five".