7385506648663 has 32 divisors (see below), whose sum is σ = 8721691776000. Its totient is φ = 6165486201600.

The previous prime is 7385506648657. The next prime is 7385506648687. The reversal of 7385506648663 is 3668466055837.

It is a de Polignac number, because none of the positive numbers 2^k-7385506648663 is a prime.

It is a Smith number, since the sum of its digits (67) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (7385506640663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 214235518 + ... + 214269988.

It is an arithmetic number, because the mean of its divisors is an integer number (272552868000).

Almost surely, 2^{7385506648663} is an apocalyptic number.

7385506648663 is a deficient number, since it is larger than the sum of its proper divisors (1336185127337).

7385506648663 is a wasteful number, since it uses less digits than its factorization.

7385506648663 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42223.

The product of its (nonzero) digits is 522547200, while the sum is 67.

The spelling of 7385506648663 in words is "seven trillion, three hundred eighty-five billion, five hundred six million, six hundred forty-eight thousand, six hundred sixty-three".