6891010001 has 4 divisors (see below), whose sum is σ = 6891177072. Its totient is φ = 6890842932.

The previous prime is 6891009977. The next prime is 6891010019. The reversal of 6891010001 is 1000101986.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-6891010001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6891010051) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27770 + ... + 120636.

It is an arithmetic number, because the mean of its divisors is an integer number (1722794268).

Almost surely, 2^6891010001 is an apocalyptic number.

It is an amenable number.

6891010001 is a deficient number, since it is larger than the sum of its proper divisors (167071).

6891010001 is an equidigital number, since it uses as much as digits as its factorization.

6891010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167070.

The product of its (nonzero) digits is 432, while the sum is 26.

The square root of 6891010001 is about 83012.1075566691. The cubic root of 6891010001 is about 1902.9510927326.

Adding to 6891010001 its reverse (1000101986), we get a palindrome (7891111987).

The spelling of 6891010001 in words is "six billion, eight hundred ninety-one million, ten thousand, one".