404255461778 has 16 divisors (see below), whose sum is σ = 698067828864. Its totient is φ = 171987724320.

The previous prime is 404255461763. The next prime is 404255461781. The reversal of 404255461778 is 877164552404.

It is a happy number.

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, 105382718 + ... + 105386553.

It is an arithmetic number, because the mean of its divisors is an integer number (43629239304).

Almost surely, 2^404255461778 is an apocalyptic number.

404255461778 is a deficient number, since it is larger than the sum of its proper divisors (293812367086).

404255461778 is a wasteful number, since it uses less digits than its factorization.

404255461778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 210769417.

The product of its (nonzero) digits is 7526400, while the sum is 53.

The spelling of 404255461778 in words is "four hundred four billion, two hundred fifty-five million, four hundred sixty-one thousand, seven hundred seventy-eight".