5577491778 has 8 divisors (see below), whose sum is σ = 11154983568. Its totient is φ = 1859163924.

The previous prime is 5577491771. The next prime is 5577491813. The reversal of 5577491778 is 8771947755.

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

5577491778 is an admirable number.

It is a super-2 number, since 2×5577491778² = 62216829067315202568, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5577491771) 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, 464790976 + ... + 464790987.

It is an arithmetic number, because the mean of its divisors is an integer number (1394372946).

Almost surely, 2^5577491778 is an apocalyptic number.

5577491778 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.

5577491778 is a wasteful number, since it uses less digits than its factorization.

5577491778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 929581968.

The product of its digits is 17287200, while the sum is 60.

The square root of 5577491778 is about 74682.6069309314. The cubic root of 5577491778 is about 1773.4256253984.

The spelling of 5577491778 in words is "five billion, five hundred seventy-seven million, four hundred ninety-one thousand, seven hundred seventy-eight".