8612018778 has 16 divisors (see below), whose sum is σ = 18789859296. Its totient is φ = 2609702640.

The previous prime is 8612018771. The next prime is 8612018791. The reversal of 8612018778 is 8778102168.

It is a super-2 number, since 2×8612018778² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (8612018771) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 65242501 + ... + 65242632.

It is an arithmetic number, because the mean of its divisors is an integer number (1174366206).

Almost surely, 2^8612018778 is an apocalyptic number.

8612018778 is an abundant number, since it is smaller than the sum of its proper divisors (10177840518).

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

8612018778 is a wasteful number, since it uses less digits than its factorization.

8612018778 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130485149.

The product of its (nonzero) digits is 301056, while the sum is 48.

The square root of 8612018778 is about 92800.9632385354. The cubic root of 8612018778 is about 2049.7535914816.

The spelling of 8612018778 in words is "eight billion, six hundred twelve million, eighteen thousand, seven hundred seventy-eight".