2991691147200 has 672 divisors, whose sum is σ = 11869476733440. Its totient is φ = 644441702400.

The previous prime is 2991691147171. The next prime is 2991691147253. The reversal of 2991691147200 is 27411961992.

It is a tau number, because it is divible by the number of its divisors (672).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 123199060 + ... + 123223340.

Almost surely, 2^{2991691147200} is an apocalyptic number.

2991691147200 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2991691147200, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5934738366720).

2991691147200 is an abundant number, since it is smaller than the sum of its proper divisors (8877785586240).

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

2991691147200 is a wasteful number, since it uses less digits than its factorization.

2991691147200 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24525 (or 24510 counting only the distinct ones).

The product of its (nonzero) digits is 489888, while the sum is 51.

The spelling of 2991691147200 in words is "two trillion, nine hundred ninety-one billion, six hundred ninety-one million, one hundred forty-seven thousand, two hundred".