7638251325671 has 4 divisors (see below), whose sum is σ = 7644177045600. Its totient is φ = 7632325605744.

The previous prime is 7638251325647. The next prime is 7638251325697. The reversal of 7638251325671 is 1765231528367.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7638251325671 is a prime.

It is a super-2 number, since 2×7638251325671² (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 (7638251325071) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2962858031 + ... + 2962860608.

It is an arithmetic number, because the mean of its divisors is an integer number (1911044261400).

Almost surely, 2^{7638251325671} is an apocalyptic number.

7638251325671 is a deficient number, since it is larger than the sum of its proper divisors (5925719929).

7638251325671 is a wasteful number, since it uses less digits than its factorization.

7638251325671 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5925719928.

The product of its digits is 12700800, while the sum is 56.

The spelling of 7638251325671 in words is "seven trillion, six hundred thirty-eight billion, two hundred fifty-one million, three hundred twenty-five thousand, six hundred seventy-one".