7664631868911 has 8 divisors (see below), whose sum is σ = 10219530747904. Its totient is φ = 5109743784600.

The previous prime is 7664631868897. The next prime is 7664631868979. The reversal of 7664631868911 is 1198681364667.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 7664631868911 - 2¹⁷ = 7664631737839 is a prime.

It is a super-2 number, since 2×7664631868911² (a number of 27 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 (7664631866911) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 863665 + ... + 4009386.

It is an arithmetic number, because the mean of its divisors is an integer number (1277441343488).

Almost surely, 2^{7664631868911} is an apocalyptic number.

7664631868911 is a deficient number, since it is larger than the sum of its proper divisors (2554898878993).

7664631868911 is a wasteful number, since it uses less digits than its factorization.

7664631868911 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5397341.

The product of its digits is 62705664, while the sum is 66.

The spelling of 7664631868911 in words is "seven trillion, six hundred sixty-four billion, six hundred thirty-one million, eight hundred sixty-eight thousand, nine hundred eleven".