83938742207 has 4 divisors (see below), whose sum is σ = 88876315296. Its totient is φ = 79001169120.

The previous prime is 83938742189. The next prime is 83938742243. The reversal of 83938742207 is 70224783938.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 70224783938 = 2 ⋅35112391969.

It is a cyclic number.

It is not a de Polignac number, because 83938742207 - 2⁸ = 83938741951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83938742287) 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, 2468786519 + ... + 2468786552.

It is an arithmetic number, because the mean of its divisors is an integer number (22219078824).

Almost surely, 2^83938742207 is an apocalyptic number.

83938742207 is a deficient number, since it is larger than the sum of its proper divisors (4937573089).

83938742207 is a wasteful number, since it uses less digits than its factorization.

83938742207 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4937573088.

The product of its (nonzero) digits is 4064256, while the sum is 53.

The spelling of 83938742207 in words is "eighty-three billion, nine hundred thirty-eight million, seven hundred forty-two thousand, two hundred seven".