6901372991 has 24 divisors (see below), whose sum is σ = 7266564864. Its totient is φ = 6553522080.

The previous prime is 6901372979. The next prime is 6901372997. The reversal of 6901372991 is 1992731096.

It is not a de Polignac number, because 6901372991 - 2⁶ = 6901372927 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6901372997) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 24386336 + ... + 24386618.

It is an arithmetic number, because the mean of its divisors is an integer number (302773536).

Almost surely, 2^6901372991 is an apocalyptic number.

6901372991 is a deficient number, since it is larger than the sum of its proper divisors (365191873).

6901372991 is a wasteful number, since it uses less digits than its factorization.

6901372991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 719 (or 690 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 47.

The square root of 6901372991 is about 83074.5026527394. The cubic root of 6901372991 is about 1903.9045275220.

The spelling of 6901372991 in words is "six billion, nine hundred one million, three hundred seventy-two thousand, nine hundred ninety-one".