7638245636993 has 32 divisors (see below), whose sum is σ = 8306956449792. Its totient is φ = 7004850652800.

The previous prime is 7638245636951. The next prime is 7638245637017. The reversal of 7638245636993 is 3996365428367.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-7638245636993 is a prime.

It is a super-2 number, since 2×7638245636993² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7638245632993) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 12423746 + ... + 13024052.

It is an arithmetic number, because the mean of its divisors is an integer number (259592389056).

Almost surely, 2^{7638245636993} is an apocalyptic number.

It is an amenable number.

7638245636993 is a deficient number, since it is larger than the sum of its proper divisors (668710812799).

7638245636993 is a wasteful number, since it uses less digits than its factorization.

7638245636993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 600605.

The product of its digits is 1058158080, while the sum is 71.

The spelling of 7638245636993 in words is "seven trillion, six hundred thirty-eight billion, two hundred forty-five million, six hundred thirty-six thousand, nine hundred ninety-three".