778404930241345 has 8 divisors (see below), whose sum is σ = 1019002817770560. Its totient is φ = 566112676539120.

The previous prime is 778404930241331. The next prime is 778404930241391. The reversal of 778404930241345 is 543142039404877.

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

It is not a de Polignac number, because 778404930241345 - 2⁴¹ = 776205906985793 is a prime.

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, 7076408456685 + ... + 7076408456794.

It is an arithmetic number, because the mean of its divisors is an integer number (127375352221320).

Almost surely, 2^{778404930241345} is an apocalyptic number.

It is an amenable number.

778404930241345 is a deficient number, since it is larger than the sum of its proper divisors (240597887529215).

778404930241345 is a wasteful number, since it uses less digits than its factorization.

778404930241345 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14152816913495.

The product of its (nonzero) digits is 81285120, while the sum is 61.

The spelling of 778404930241345 in words is "seven hundred seventy-eight trillion, four hundred four billion, nine hundred thirty million, two hundred forty-one thousand, three hundred forty-five".