8356387380999 has 16 divisors (see below), whose sum is σ = 12799519587072. Its totient is φ = 4750337161728.

The previous prime is 8356387380961. The next prime is 8356387381003. The reversal of 8356387380999 is 9990837836538.

It is not a de Polignac number, because 8356387380999 - 2⁸ = 8356387380743 is a prime.

It is a super-2 number, since 2×8356387380999² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8356387380959) 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 15 ways as a sum of consecutive naturals, for example, 1030885089 + ... + 1030893194.

It is an arithmetic number, because the mean of its divisors is an integer number (799969974192).

Almost surely, 2^{8356387380999} is an apocalyptic number.

8356387380999 is a deficient number, since it is larger than the sum of its proper divisors (4443132206073).

8356387380999 is a wasteful number, since it uses less digits than its factorization.

8356387380999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2061778486.

The product of its (nonzero) digits is 2116316160, while the sum is 78.

The spelling of 8356387380999 in words is "eight trillion, three hundred fifty-six billion, three hundred eighty-seven million, three hundred eighty thousand, nine hundred ninety-nine".