83774996987137 has 4 divisors (see below), whose sum is σ = 83775035352240. Its totient is φ = 83774958622036.

The previous prime is 83774996987111. The next prime is 83774996987159. The reversal of 83774996987137 is 73178969947738.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 83774996987137 - 2¹¹ = 83774996985089 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (83774996987107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15695863 + ... + 20344780.

It is an arithmetic number, because the mean of its divisors is an integer number (20943758838060).

Almost surely, 2^{83774996987137} is an apocalyptic number.

It is an amenable number.

83774996987137 is a deficient number, since it is larger than the sum of its proper divisors (38365103).

83774996987137 is a wasteful number, since it uses less digits than its factorization.

83774996987137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38365102.

The product of its digits is 24196548096, while the sum is 88.

The spelling of 83774996987137 in words is "eighty-three trillion, seven hundred seventy-four billion, nine hundred ninety-six million, nine hundred eighty-seven thousand, one hundred thirty-seven".