6700406703991 has 48 divisors (see below), whose sum is σ = 9695646565920. Its totient is φ = 4535974840320.

The previous prime is 6700406703979. The next prime is 6700406704001. The reversal of 6700406703991 is 1993076040076.

It is not a de Polignac number, because 6700406703991 - 2⁵ = 6700406703959 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6700406703191) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 28005726 + ... + 28243963.

It is an arithmetic number, because the mean of its divisors is an integer number (201992636790).

Almost surely, 2^{6700406703991} is an apocalyptic number.

6700406703991 is a deficient number, since it is larger than the sum of its proper divisors (2995239861929).

6700406703991 is a wasteful number, since it uses less digits than its factorization.

6700406703991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 56249744 (or 56249737 counting only the distinct ones).

The product of its (nonzero) digits is 1714608, while the sum is 52.

The spelling of 6700406703991 in words is "six trillion, seven hundred billion, four hundred six million, seven hundred three thousand, nine hundred ninety-one".