78040409038 has 8 divisors (see below), whose sum is σ = 117392231088. Its totient is φ = 38909665344.

The previous prime is 78040409011. The next prime is 78040409053. The reversal of 78040409038 is 83090404087.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 78040408985 and 78040409003.

It is a congruent number.

It is an unprimeable number.

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, 55268706 + ... + 55270117.

It is an arithmetic number, because the mean of its divisors is an integer number (14674028886).

Almost surely, 2^78040409038 is an apocalyptic number.

78040409038 is a deficient number, since it is larger than the sum of its proper divisors (39351822050).

78040409038 is a wasteful number, since it uses less digits than its factorization.

78040409038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110539178.

The product of its (nonzero) digits is 193536, while the sum is 43.

The spelling of 78040409038 in words is "seventy-eight billion, forty million, four hundred nine thousand, thirty-eight".