6991299453 has 8 divisors (see below), whose sum is σ = 9870069888. Its totient is φ = 4386697664.

The previous prime is 6991299433. The next prime is 6991299457. The reversal of 6991299453 is 3549921996.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 6991299453 - 2¹² = 6991295357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6991299393 and 6991299402.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6991299457) 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, 68542101 + ... + 68542202.

It is an arithmetic number, because the mean of its divisors is an integer number (1233758736).

Almost surely, 2^6991299453 is an apocalyptic number.

It is an amenable number.

6991299453 is a deficient number, since it is larger than the sum of its proper divisors (2878770435).

6991299453 is a wasteful number, since it uses less digits than its factorization.

6991299453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137084323.

The product of its digits is 4723920, while the sum is 57.

The square root of 6991299453 is about 83613.9907730758. The cubic root of 6991299453 is about 1912.1383042940.

The spelling of 6991299453 in words is "six billion, nine hundred ninety-one million, two hundred ninety-nine thousand, four hundred fifty-three".