83438722783438 has 8 divisors (see below), whose sum is σ = 136536091827480. Its totient is φ = 37926692174280.

The previous prime is 83438722783387. The next prime is 83438722783439.

83438722783438 is nontrivially palindromic in base 10.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83438722783439) 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, 1896334608693 + ... + 1896334608736.

It is an arithmetic number, because the mean of its divisors is an integer number (17067011478435).

Almost surely, 2^{83438722783438} is an apocalyptic number.

83438722783438 is a deficient number, since it is larger than the sum of its proper divisors (53097369044042).

83438722783438 is a wasteful number, since it uses less digits than its factorization.

83438722783438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3792669217442.

The product of its digits is 1040449536, while the sum is 70.

The spelling of 83438722783438 in words is "eighty-three trillion, four hundred thirty-eight billion, seven hundred twenty-two million, seven hundred eighty-three thousand, four hundred thirty-eight".