8838478216381 has 4 divisors (see below), whose sum is σ = 9641976236064. Its totient is φ = 8034980196700.

The previous prime is 8838478216339. The next prime is 8838478216387. The reversal of 8838478216381 is 1836128748388.

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 a de Polignac number, because none of the positive numbers 2^k-8838478216381 is a prime.

It is a super-2 number, since 2×8838478216381² (a number of 27 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 (8838478216387) 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, 401749009825 + ... + 401749009846.

It is an arithmetic number, because the mean of its divisors is an integer number (2410494059016).

Almost surely, 2^{8838478216381} is an apocalyptic number.

It is an amenable number.

8838478216381 is a deficient number, since it is larger than the sum of its proper divisors (803498019683).

8838478216381 is a wasteful number, since it uses less digits than its factorization.

8838478216381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803498019682.

The product of its digits is 99090432, while the sum is 67.

The spelling of 8838478216381 in words is "eight trillion, eight hundred thirty-eight billion, four hundred seventy-eight million, two hundred sixteen thousand, three hundred eighty-one".