78404532044 has 24 divisors (see below), whose sum is σ = 137378950800. Its totient is φ = 39153438720.

The previous prime is 78404532013. The next prime is 78404532071. The reversal of 78404532044 is 44023540487.

It is a super-2 number, since 2×78404532044² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 78404531992 and 78404532010.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20800592 + ... + 20804360.

It is an arithmetic number, because the mean of its divisors is an integer number (5724122950).

Almost surely, 2^78404532044 is an apocalyptic number.

It is an amenable number.

78404532044 is a deficient number, since it is larger than the sum of its proper divisors (58974418756).

78404532044 is a wasteful number, since it uses less digits than its factorization.

78404532044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8873 (or 8871 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 41.

The spelling of 78404532044 in words is "seventy-eight billion, four hundred four million, five hundred thirty-two thousand, forty-four".