6991248642303 has 16 divisors (see below), whose sum is σ = 9489082982400. Its totient is φ = 4577741145120.

The previous prime is 6991248642293. The next prime is 6991248642337. The reversal of 6991248642303 is 3032468421996.

6991248642303 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 6991248642303 - 2⁸ = 6991248642047 is a prime.

It is a super-2 number, since 2×6991248642303² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6991248642353) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 77177088 + ... + 77267621.

It is an arithmetic number, because the mean of its divisors is an integer number (593067686400).

Almost surely, 2^{6991248642303} is an apocalyptic number.

6991248642303 is a deficient number, since it is larger than the sum of its proper divisors (2497834340097).

6991248642303 is a wasteful number, since it uses less digits than its factorization.

6991248642303 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 154444982.

The product of its (nonzero) digits is 13436928, while the sum is 57.

The spelling of 6991248642303 in words is "six trillion, nine hundred ninety-one billion, two hundred forty-eight million, six hundred forty-two thousand, three hundred three".