8611978914 has 128 divisors (see below), whose sum is σ = 23993948160. Its totient is φ = 2224324800.

The previous prime is 8611978883. The next prime is 8611978961. The reversal of 8611978914 is 4198791168.

8611978914 is a `hidden beast` number, since 8 + 611 + 9 + 7 + 8 + 9 + 14 = 666.

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

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 746877 + ... + 758319.

It is an arithmetic number, because the mean of its divisors is an integer number (187452720).

Almost surely, 2^8611978914 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8611978914, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11996974080).

8611978914 is an abundant number, since it is smaller than the sum of its proper divisors (15381969246).

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

8611978914 is a wasteful number, since it uses less digits than its factorization.

8611978914 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11653 (or 11647 counting only the distinct ones).

The product of its digits is 870912, while the sum is 54.

The square root of 8611978914 is about 92800.7484560335. The cubic root of 8611978914 is about 2049.7504287890.

The spelling of 8611978914 in words is "eight billion, six hundred eleven million, nine hundred seventy-eight thousand, nine hundred fourteen".