778114004442 has 64 divisors (see below), whose sum is σ = 1671743525760. Its totient is φ = 240588343296.

The previous prime is 778114004441. The next prime is 778114004471. The reversal of 778114004442 is 244400411877.

It is a super-2 number, since 2×778114004442² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 778114004394 and 778114004403.

It is not an unprimeable number, because it can be changed into a prime (778114004441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1742088 + ... + 2142684.

It is an arithmetic number, because the mean of its divisors is an integer number (26120992590).

Almost surely, 2^778114004442 is an apocalyptic number.

778114004442 is an abundant number, since it is smaller than the sum of its proper divisors (893629521318).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

778114004442 is a wasteful number, since it uses less digits than its factorization.

778114004442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 400895.

The product of its (nonzero) digits is 200704, while the sum is 42.

The spelling of 778114004442 in words is "seven hundred seventy-eight billion, one hundred fourteen million, four thousand, four hundred forty-two".