879349121943978 has 32 divisors (see below), whose sum is σ = 2009951914715136. Its totient is φ = 251241223200048.

The previous prime is 879349121943973. The next prime is 879349121944037.

879349121943978 is nontrivially palindromic in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 879349121943978.

It is not an unprimeable number, because it can be changed into a prime (879349121943973) 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, 49895326 + ... + 65178537.

It is an arithmetic number, because the mean of its divisors is an integer number (62810997334848).

Almost surely, 2^{879349121943978} is an apocalyptic number.

879349121943978 is an abundant number, since it is smaller than the sum of its proper divisors (1130602792771158).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

879349121943978 is a wasteful number, since it uses less digits than its factorization.

879349121943978 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 115255818.

The product of its digits is 5925685248, while the sum is 84.

The spelling of 879349121943978 in words is "eight hundred seventy-nine trillion, three hundred forty-nine billion, one hundred twenty-one million, nine hundred forty-three thousand, nine hundred seventy-eight".