455616481778 has 8 divisors (see below), whose sum is σ = 683429195100. Its totient is φ = 227806750080.

The previous prime is 455616481777. The next prime is 455616481781. The reversal of 455616481778 is 877184616554.

It can be written as a sum of positive squares in 2 ways, for example, as 336814247449 + 118802234329 = 580357^2 + 344677^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 455616481778.

It is not an unprimeable number, because it can be changed into a prime (455616481777) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 313283 + ... + 1004678.

Almost surely, 2^455616481778 is an apocalyptic number.

455616481778 is a deficient number, since it is larger than the sum of its proper divisors (227812713322).

455616481778 is a wasteful number, since it uses less digits than its factorization.

455616481778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1490812.

The product of its digits is 45158400, while the sum is 62.

The spelling of 455616481778 in words is "four hundred fifty-five billion, six hundred sixteen million, four hundred eighty-one thousand, seven hundred seventy-eight".