5711799978 has 48 divisors (see below), whose sum is σ = 13126276800. Its totient is φ = 1788828288.

The previous prime is 5711799953. The next prime is 5711800021. The reversal of 5711799978 is 8799971175.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 163723 + ... + 195521.

It is an arithmetic number, because the mean of its divisors is an integer number (273464100).

Almost surely, 2^5711799978 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 5711799978, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (6563138400).

5711799978 is an abundant number, since it is smaller than the sum of its proper divisors (7414476822).

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

5711799978 is a wasteful number, since it uses less digits than its factorization.

5711799978 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32411 (or 32408 counting only the distinct ones).

The product of its digits is 10001880, while the sum is 63.

The square root of 5711799978 is about 75576.4512133244. The cubic root of 5711799978 is about 1787.5477982752.

The spelling of 5711799978 in words is "five billion, seven hundred eleven million, seven hundred ninety-nine thousand, nine hundred seventy-eight".