6691527642001 has 4 divisors (see below), whose sum is σ = 6847144563952. Its totient is φ = 6535910720052.

The previous prime is 6691527641993. The next prime is 6691527642119. The reversal of 6691527642001 is 1002467251966.

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.

It is a cyclic number.

It is not a de Polignac number, because 6691527642001 - 2³ = 6691527641993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (6691527642601) 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, 77808460911 + ... + 77808460996.

It is an arithmetic number, because the mean of its divisors is an integer number (1711786140988).

Almost surely, 2^{6691527642001} is an apocalyptic number.

It is an amenable number.

6691527642001 is a deficient number, since it is larger than the sum of its proper divisors (155616921951).

6691527642001 is a wasteful number, since it uses less digits than its factorization.

6691527642001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 155616921950.

The product of its (nonzero) digits is 1088640, while the sum is 49.

The spelling of 6691527642001 in words is "six trillion, six hundred ninety-one billion, five hundred twenty-seven million, six hundred forty-two thousand, one".