6666660100511 has 4 divisors (see below), whose sum is σ = 6668052183000. Its totient is φ = 6665268018024.

The previous prime is 6666660100487. The next prime is 6666660100559. The reversal of 6666660100511 is 1150010666666.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 6666660100511 - 2⁶ = 6666660100447 is a prime.

It is a super-2 number, since 2×6666660100511² (a number of 26 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6666660100411) 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, 696034061 + ... + 696043638.

It is an arithmetic number, because the mean of its divisors is an integer number (1667013045750).

Almost surely, 2^{6666660100511} is an apocalyptic number.

6666660100511 is a deficient number, since it is larger than the sum of its proper divisors (1392082489).

6666660100511 is a wasteful number, since it uses less digits than its factorization.

6666660100511 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1392082488.

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 6666660100511 in words is "six trillion, six hundred sixty-six billion, six hundred sixty million, one hundred thousand, five hundred eleven".