4156405788378 has 16 divisors (see below), whose sum is σ = 8312845048416. Its totient is φ = 1385463017520.

The previous prime is 4156405788313. The next prime is 4156405788389. The reversal of 4156405788378 is 8738875046514.

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, 396625 + ... + 2910347.

It is an arithmetic number, because the mean of its divisors is an integer number (519552815526).

Almost surely, 2^{4156405788378} is an apocalyptic number.

4156405788378 is an abundant number, since it is smaller than the sum of its proper divisors (4156439260038).

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

4156405788378 is a wasteful number, since it uses less digits than its factorization.

4156405788378 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2789309.

The product of its (nonzero) digits is 180633600, while the sum is 66.

The spelling of 4156405788378 in words is "four trillion, one hundred fifty-six billion, four hundred five million, seven hundred eighty-eight thousand, three hundred seventy-eight".