4078405123911 has 24 divisors (see below), whose sum is σ = 5897525728640. Its totient is φ = 2715939072000.

The previous prime is 4078405123843. The next prime is 4078405123913. The reversal of 4078405123911 is 1193215048704.

4078405123911 is a `hidden beast` number, since 4 + 0 + 7 + 8 + 40 + 512 + 3 + 91 + 1 = 666.

It is not a de Polignac number, because 4078405123911 - 2⁹ = 4078405123399 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4078405123913) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 188795511 + ... + 188817111.

Almost surely, 2^{4078405123911} is an apocalyptic number.

4078405123911 is a deficient number, since it is larger than the sum of its proper divisors (1819120604729).

4078405123911 is a wasteful number, since it uses less digits than its factorization.

4078405123911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43767 (or 43764 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 4078405123911 in words is "four trillion, seventy-eight billion, four hundred five million, one hundred twenty-three thousand, nine hundred eleven".