73665141331 has 4 divisors (see below), whose sum is σ = 75055049712. Its totient is φ = 72275232952.

The previous prime is 73665141301. The next prime is 73665141337. The reversal of 73665141331 is 13314156637.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 73665141331 - 2⁵ = 73665141299 is a prime.

It is a super-2 number, since 2×73665141331² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73665141337) by changing a digit.

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 in 3 ways as a sum of consecutive naturals, for example, 694954111 + ... + 694954216.

It is an arithmetic number, because the mean of its divisors is an integer number (18763762428).

Almost surely, 2^73665141331 is an apocalyptic number.

73665141331 is a deficient number, since it is larger than the sum of its proper divisors (1389908381).

73665141331 is a wasteful number, since it uses less digits than its factorization.

73665141331 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1389908380.

The product of its digits is 136080, while the sum is 40.

Adding to 73665141331 its reverse (13314156637), we get a palindrome (86979297968).

The spelling of 73665141331 in words is "seventy-three billion, six hundred sixty-five million, one hundred forty-one thousand, three hundred thirty-one".