6994636416 has 192 divisors, whose sum is σ = 21272116320. Its totient is φ = 2287014912.

The previous prime is 6994636393. The next prime is 6994636433. The reversal of 6994636416 is 6146364996.

It is a tau number, because it is divible by the number of its divisors (192).

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

It is a nude number because it is divisible by every one of its digits.

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, 1646391 + ... + 1650633.

Almost surely, 2^6994636416 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6994636416, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (10636058160).

6994636416 is an abundant number, since it is smaller than the sum of its proper divisors (14277479904).

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

6994636416 is an equidigital number, since it uses as much as digits as its factorization.

6994636416 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4325 (or 4301 counting only the distinct ones).

The product of its digits is 5038848, while the sum is 54.

The square root of 6994636416 is about 83633.9429657600. The cubic root of 6994636416 is about 1912.4424785468.

The spelling of 6994636416 in words is "six billion, nine hundred ninety-four million, six hundred thirty-six thousand, four hundred sixteen".