7648662668467 has 4 divisors (see below), whose sum is σ = 7778301018840. Its totient is φ = 7519024318096.

The previous prime is 7648662668411. The next prime is 7648662668509.

It is a happy number.

7648662668467 is nontrivially palindromic in base 10.

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 7648662668467 - 2²³ = 7648654279859 is a prime.

It is a super-2 number, since 2×7648662668467² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 7648662668393 and 7648662668402.

It is not an unprimeable number, because it can be changed into a prime (7648662678467) 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, 64819175098 + ... + 64819175215.

It is an arithmetic number, because the mean of its divisors is an integer number (1944575254710).

Almost surely, 2^{7648662668467} is an apocalyptic number.

7648662668467 is a deficient number, since it is larger than the sum of its proper divisors (129638350373).

7648662668467 is a wasteful number, since it uses less digits than its factorization.

7648662668467 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129638350372.

The product of its digits is 4682022912, while the sum is 76.

The spelling of 7648662668467 in words is "seven trillion, six hundred forty-eight billion, six hundred sixty-two million, six hundred sixty-eight thousand, four hundred sixty-seven".