78812487044 has 12 divisors (see below), whose sum is σ = 137947800144. Its totient is φ = 39398829864.

The previous prime is 78812487023. The next prime is 78812487049. The reversal of 78812487044 is 44078421887.

It is a super-2 number, since 2×78812487044² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (78812487049) 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 in 3 ways as a sum of consecutive naturals, for example, 1829462 + ... + 1872045.

It is an arithmetic number, because the mean of its divisors is an integer number (11495650012).

Almost surely, 2^78812487044 is an apocalyptic number.

It is an amenable number.

78812487044 is a deficient number, since it is larger than the sum of its proper divisors (59135313100).

78812487044 is a wasteful number, since it uses less digits than its factorization.

78812487044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3706834 (or 3706832 counting only the distinct ones).

The product of its (nonzero) digits is 3211264, while the sum is 53.

The spelling of 78812487044 in words is "seventy-eight billion, eight hundred twelve million, four hundred eighty-seven thousand, forty-four".