87944838808319 has 4 divisors (see below), whose sum is σ = 87959136463440. Its totient is φ = 87930541153200.

The previous prime is 87944838808303. The next prime is 87944838808331. The reversal of 87944838808319 is 91380883844978.

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 87944838808319 - 2⁴ = 87944838808303 is a prime.

It is a super-2 number, since 2×87944838808319² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (87944838808819) 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, 7148818334 + ... + 7148830635.

It is an arithmetic number, because the mean of its divisors is an integer number (21989784115860).

Almost surely, 2^{87944838808319} is an apocalyptic number.

87944838808319 is a deficient number, since it is larger than the sum of its proper divisors (14297655121).

87944838808319 is a wasteful number, since it uses less digits than its factorization.

87944838808319 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14297655120.

The product of its (nonzero) digits is 2675441664, while the sum is 80.

The spelling of 87944838808319 in words is "eighty-seven trillion, nine hundred forty-four billion, eight hundred thirty-eight million, eight hundred eight thousand, three hundred nineteen".