404077777812 has 72 divisors (see below), whose sum is σ = 1023667811712. Its totient is φ = 134396371200.

The previous prime is 404077777783. The next prime is 404077777819. The reversal of 404077777812 is 218777770404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (404077777819) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 32035387 + ... + 32047997.

It is an arithmetic number, because the mean of its divisors is an integer number (14217608496).

Almost surely, 2^404077777812 is an apocalyptic number.

It is an amenable number.

404077777812 is an abundant number, since it is smaller than the sum of its proper divisors (619590033900).

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

404077777812 is a wasteful number, since it uses less digits than its factorization.

404077777812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14509 (or 14504 counting only the distinct ones).

The product of its (nonzero) digits is 4302592, while the sum is 54.

The spelling of 404077777812 in words is "four hundred four billion, seventy-seven million, seven hundred seventy-seven thousand, eight hundred twelve".