42879336156069 has 24 divisors (see below), whose sum is σ = 66506999214528. Its totient is φ = 24502376949120.

The previous prime is 42879336156023. The next prime is 42879336156091. The reversal of 42879336156069 is 96065163397824.

It is not a de Polignac number, because 42879336156069 - 2¹⁷ = 42879336024997 is a prime.

It is a super-2 number, since 2×42879336156069² (a number of 28 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 42879336155994 and 42879336156012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42879336158069) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 49288749 + ... + 50151165.

It is an arithmetic number, because the mean of its divisors is an integer number (2771124967272).

It is a 1-persistent number, because it is pandigital, but 2⋅42879336156069 = 85758672312138 is not.

Almost surely, 2^{42879336156069} is an apocalyptic number.

42879336156069 is a gapful number since it is divisible by the number (49) formed by its first and last digit.

It is an amenable number.

42879336156069 is a deficient number, since it is larger than the sum of its proper divisors (23627663058459).

42879336156069 is a wasteful number, since it uses less digits than its factorization.

42879336156069 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1200665 (or 1200658 counting only the distinct ones).

The product of its (nonzero) digits is 352719360, while the sum is 69.

The spelling of 42879336156069 in words is "forty-two trillion, eight hundred seventy-nine billion, three hundred thirty-six million, one hundred fifty-six thousand, sixty-nine".