78461359124 has 12 divisors (see below), whose sum is σ = 137309475744. Its totient is φ = 39230080344.

The previous prime is 78461359121. The next prime is 78461359157. The reversal of 78461359124 is 42195316487.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (78461359121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 285089 + ... + 488055.

It is an arithmetic number, because the mean of its divisors is an integer number (11442456312).

Almost surely, 2^78461359124 is an apocalyptic number.

It is an amenable number.

78461359124 is a deficient number, since it is larger than the sum of its proper divisors (58848116620).

78461359124 is a wasteful number, since it uses less digits than its factorization.

78461359124 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 299614 (or 299612 counting only the distinct ones).

The product of its digits is 1451520, while the sum is 50.

The spelling of 78461359124 in words is "seventy-eight billion, four hundred sixty-one million, three hundred fifty-nine thousand, one hundred twenty-four".