4077778189264 has 20 divisors (see below), whose sum is σ = 8508441029956. Its totient is φ = 1882051471872.

The previous prime is 4077778189249. The next prime is 4077778189271. The reversal of 4077778189264 is 4629818777704.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 2600775486864 + 1477002702400 = 1612692^2 + 1215320^2 .

It is a junction number, because it is equal to n+sod(n) for n = 4077778189193 and 4077778189202.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 9802351209 + ... + 9802351624.

Almost surely, 2^{4077778189264} is an apocalyptic number.

It is an amenable number.

4077778189264 is an abundant number, since it is smaller than the sum of its proper divisors (4430662840692).

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

4077778189264 is a wasteful number, since it uses less digits than its factorization.

4077778189264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19604702854 (or 19604702848 counting only the distinct ones).

The product of its (nonzero) digits is 265531392, while the sum is 70.

The spelling of 4077778189264 in words is "four trillion, seventy-seven billion, seven hundred seventy-eight million, one hundred eighty-nine thousand, two hundred sixty-four".