73666395129 has 8 divisors (see below), whose sum is σ = 103391431840. Its totient is φ = 46526144256.

The previous prime is 73666395119. The next prime is 73666395211. The reversal of 73666395129 is 92159366637.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 73666395129 - 2¹¹ = 73666393081 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57), and also a Moran number because the ratio is a prime number: 1292392897 = 73666395129 / (7 + 3 + 6 + 6 + 6 + 3 + 9 + 5 + 1 + 2 + 9).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73666395119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 646196392 + ... + 646196505.

It is an arithmetic number, because the mean of its divisors is an integer number (12923928980).

Almost surely, 2^73666395129 is an apocalyptic number.

It is an amenable number.

73666395129 is a deficient number, since it is larger than the sum of its proper divisors (29725036711).

73666395129 is a wasteful number, since it uses less digits than its factorization.

73666395129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1292392919.

The product of its digits is 11022480, while the sum is 57.

The spelling of 73666395129 in words is "seventy-three billion, six hundred sixty-six million, three hundred ninety-five thousand, one hundred twenty-nine".