2455667778 has 8 divisors (see below), whose sum is σ = 4911335568. Its totient is φ = 818555924.

The previous prime is 2455667777. The next prime is 2455667791. The reversal of 2455667778 is 8777665542.

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

2455667778 is an admirable number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (2455667777) 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, 204638976 + ... + 204638987.

It is an arithmetic number, because the mean of its divisors is an integer number (613916946).

Almost surely, 2^2455667778 is an apocalyptic number.

2455667778 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2455667778 is a wasteful number, since it uses less digits than its factorization.

2455667778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 409277968.

The product of its digits is 19756800, while the sum is 57.

The square root of 2455667778 is about 49554.6948129034. The cubic root of 2455667778 is about 1349.1385044046.

The spelling of 2455667778 in words is "two billion, four hundred fifty-five million, six hundred sixty-seven thousand, seven hundred seventy-eight".