5479811778 has 64 divisors (see below), whose sum is σ = 13117685760. Its totient is φ = 1492108992.

The previous prime is 5479811767. The next prime is 5479811789. The reversal of 5479811778 is 8771189745.

It is an interprime number because it is at equal distance from previous prime (5479811767) and next prime (5479811789).

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 257343 + ... + 277821.

It is an arithmetic number, because the mean of its divisors is an integer number (204963840).

Almost surely, 2^5479811778 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5479811778, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6558842880).

5479811778 is an abundant number, since it is smaller than the sum of its proper divisors (7637873982).

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

5479811778 is a wasteful number, since it uses less digits than its factorization.

5479811778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20791.

The product of its digits is 3951360, while the sum is 57.

The square root of 5479811778 is about 74025.7507763346. The cubic root of 5479811778 is about 1763.0117786674.

The spelling of 5479811778 in words is "five billion, four hundred seventy-nine million, eight hundred eleven thousand, seven hundred seventy-eight".