83463438121647 has 4 divisors (see below), whose sum is σ = 111284584162200. Its totient is φ = 55642292081096.

The previous prime is 83463438121573. The next prime is 83463438121649. The reversal of 83463438121647 is 74612183436438.

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 83463438121647 - 2¹⁹ = 83463437597359 is a prime.

It is a super-2 number, since 2×83463438121647² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83463438121649) 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, 13910573020272 + ... + 13910573020277.

It is an arithmetic number, because the mean of its divisors is an integer number (27821146040550).

Almost surely, 2^{83463438121647} is an apocalyptic number.

83463438121647 is a deficient number, since it is larger than the sum of its proper divisors (27821146040553).

83463438121647 is a wasteful number, since it uses less digits than its factorization.

83463438121647 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27821146040552.

The product of its digits is 55738368, while the sum is 60.

The spelling of 83463438121647 in words is "eighty-three trillion, four hundred sixty-three billion, four hundred thirty-eight million, one hundred twenty-one thousand, six hundred forty-seven".