78346712442 has 16 divisors (see below), whose sum is σ = 156719056032. Its totient is φ = 26111298960.

The previous prime is 78346712399. The next prime is 78346712443. The reversal of 78346712442 is 24421764387.

It is a super-2 number, since 2×78346712442² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78346712391 and 78346712400.

It is not an unprimeable number, because it can be changed into a prime (78346712443) 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, 1028113 + ... + 1101684.

It is an arithmetic number, because the mean of its divisors is an integer number (9794941002).

Almost surely, 2^78346712442 is an apocalyptic number.

78346712442 is an abundant number, since it is smaller than the sum of its proper divisors (78372343590).

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

78346712442 is a wasteful number, since it uses less digits than its factorization.

78346712442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2135933.

The product of its digits is 1806336, while the sum is 48.

It can be divided in two parts, 7834 and 6712442, that added together give a palindrome (6720276).

The spelling of 78346712442 in words is "seventy-eight billion, three hundred forty-six million, seven hundred twelve thousand, four hundred forty-two".