4815077778 has 32 divisors (see below), whose sum is σ = 12228769920. Its totient is φ = 1375736400.

The previous prime is 4815077749. The next prime is 4815077797. The reversal of 4815077778 is 8777705184.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6368773 + ... + 6369528.

It is an arithmetic number, because the mean of its divisors is an integer number (382149060).

Almost surely, 2^4815077778 is an apocalyptic number.

4815077778 is an abundant number, since it is smaller than the sum of its proper divisors (7413692142).

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

4815077778 is a wasteful number, since it uses less digits than its factorization.

4815077778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12738319 (or 12738313 counting only the distinct ones).

The product of its (nonzero) digits is 3073280, while the sum is 54.

The square root of 4815077778 is about 69390.7614744211. The cubic root of 4815077778 is about 1688.6297469947.

The spelling of 4815077778 in words is "four billion, eight hundred fifteen million, seventy-seven thousand, seven hundred seventy-eight".