80999627437373 has 4 divisors (see below), whose sum is σ = 83188806557340. Its totient is φ = 78810448317408.

The previous prime is 80999627437303. The next prime is 80999627437387. The reversal of 80999627437373 is 37373472699908.

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

It can be written as a sum of positive squares in 2 ways, for example, as 77470046113849 + 3529581323524 = 8801707^2 + 1878718^2 .

It is a cyclic number.

It is not a de Polignac number, because 80999627437373 - 2¹⁰ = 80999627436349 is a prime.

It is a super-2 number, since 2×80999627437373² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 80999627437294 and 80999627437303.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80999627437303) 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, 1094589559928 + ... + 1094589560001.

It is an arithmetic number, because the mean of its divisors is an integer number (20797201639335).

Almost surely, 2^{80999627437373} is an apocalyptic number.

It is an amenable number.

80999627437373 is a deficient number, since it is larger than the sum of its proper divisors (2189179119967).

80999627437373 is a wasteful number, since it uses less digits than its factorization.

80999627437373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2189179119966.

The product of its (nonzero) digits is 2592487296, while the sum is 77.

The spelling of 80999627437373 in words is "eighty trillion, nine hundred ninety-nine billion, six hundred twenty-seven million, four hundred thirty-seven thousand, three hundred seventy-three".