78101012 has 48 divisors (see below), whose sum is σ = 153824832. Its totient is φ = 34394880.

The previous prime is 78101003. The next prime is 78101027. The reversal of 78101012 is 21010187.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 249368 + ... + 249680.

It is an arithmetic number, because the mean of its divisors is an integer number (3204684).

Almost surely, 2^78101012 is an apocalyptic number.

It is an amenable number.

78101012 is a deficient number, since it is larger than the sum of its proper divisors (75723820).

78101012 is a wasteful number, since it uses less digits than its factorization.

78101012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 488 (or 486 counting only the distinct ones).

The product of its (nonzero) digits is 112, while the sum is 20.

The square root of 78101012 is about 8837.4776944556. The cubic root of 78101012 is about 427.4502286937.

Adding to 78101012 its reverse (21010187), we get a palindrome (99111199).

The spelling of 78101012 in words is "seventy-eight million, one hundred one thousand, twelve".