878942417072 has 20 divisors (see below), whose sum is σ = 1703774076480. Its totient is φ = 439258784448.

The previous prime is 878942417071. The next prime is 878942417081. The reversal of 878942417072 is 270714249878.

It is a happy number.

It is a Smith number, since the sum of its digits (59) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (878942417071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 13242368 + ... + 13308575.

It is an arithmetic number, because the mean of its divisors is an integer number (85188703824).

Almost surely, 2^878942417072 is an apocalyptic number.

It is an amenable number.

878942417072 is a deficient number, since it is larger than the sum of its proper divisors (824831659408).

878942417072 is a wasteful number, since it uses less digits than its factorization.

878942417072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26553020 (or 26553014 counting only the distinct ones).

The product of its (nonzero) digits is 12644352, while the sum is 59.

The spelling of 878942417072 in words is "eight hundred seventy-eight billion, nine hundred forty-two million, four hundred seventeen thousand, seventy-two".