1078778134438 has 8 divisors (see below), whose sum is σ = 1618476559200. Its totient is φ = 539285948040.

The previous prime is 1078778134411. The next prime is 1078778134459. The reversal of 1078778134438 is 8344318778701.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51546513 + ... + 51567436.

It is an arithmetic number, because the mean of its divisors is an integer number (202309569900).

Almost surely, 2^{1078778134438} is an apocalyptic number.

1078778134438 is a deficient number, since it is larger than the sum of its proper divisors (539698424762).

1078778134438 is a wasteful number, since it uses less digits than its factorization.

1078778134438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103119182.

The product of its (nonzero) digits is 25288704, while the sum is 61.

The spelling of 1078778134438 in words is "one trillion, seventy-eight billion, seven hundred seventy-eight million, one hundred thirty-four thousand, four hundred thirty-eight".