78412334534 has 4 divisors (see below), whose sum is σ = 117618501804. Its totient is φ = 39206167266.

The previous prime is 78412334531. The next prime is 78412334543. The reversal of 78412334534 is 43543321487.

It is a semiprime because it is the product of two primes.

It is a super-2 number, since 2×78412334534² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78412334531) 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 as a sum of consecutive naturals, namely, 19603083632 + ... + 19603083635.

It is an arithmetic number, because the mean of its divisors is an integer number (29404625451).

Almost surely, 2^78412334534 is an apocalyptic number.

78412334534 is a deficient number, since it is larger than the sum of its proper divisors (39206167270).

78412334534 is a wasteful number, since it uses less digits than its factorization.

78412334534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39206167269.

The product of its digits is 967680, while the sum is 44.

The spelling of 78412334534 in words is "seventy-eight billion, four hundred twelve million, three hundred thirty-four thousand, five hundred thirty-four".