78881427833142 has 16 divisors (see below), whose sum is σ = 172104933454272. Its totient is φ = 23903462979720.

The previous prime is 78881427833137. The next prime is 78881427833147. The reversal of 78881427833142 is 24133872418887.

It is an interprime number because it is at equal distance from previous prime (78881427833137) and next prime (78881427833147).

It is a Harshad number since it is a multiple of its sum of digits (66), and also a Moran number because the ratio is a prime number: 1195173148987 = 78881427833142 / (7 + 8 + 8 + 8 + 1 + 4 + 2 + 7 + 8 + 3 + 3 + 1 + 4 + 2).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78881427833147) 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 7 ways as a sum of consecutive naturals, for example, 597586574428 + ... + 597586574559.

It is an arithmetic number, because the mean of its divisors is an integer number (10756558340892).

Almost surely, 2^{78881427833142} is an apocalyptic number.

78881427833142 is an abundant number, since it is smaller than the sum of its proper divisors (93223505621130).

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

78881427833142 is a wasteful number, since it uses less digits than its factorization.

78881427833142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1195173149003.

The product of its digits is 115605504, while the sum is 66.

The spelling of 78881427833142 in words is "seventy-eight trillion, eight hundred eighty-one billion, four hundred twenty-seven million, eight hundred thirty-three thousand, one hundred forty-two".