6642946922975 has 24 divisors (see below), whose sum is σ = 9295960846320. Its totient is φ = 4664639840000.

The previous prime is 6642946922933. The next prime is 6642946923001. The reversal of 6642946922975 is 5792296492466.

It is a happy number.

It is not a de Polignac number, because 6642946922975 - 2¹⁶ = 6642946857439 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 6642946922899 and 6642946922908.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 416477726 + ... + 416493675.

It is an arithmetic number, because the mean of its divisors is an integer number (387331701930).

Almost surely, 2^{6642946922975} is an apocalyptic number.

6642946922975 is a deficient number, since it is larger than the sum of its proper divisors (2653013923345).

6642946922975 is a wasteful number, since it uses less digits than its factorization.

6642946922975 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 832971451 (or 832971446 counting only the distinct ones).

The product of its digits is 705438720, while the sum is 71.

The spelling of 6642946922975 in words is "six trillion, six hundred forty-two billion, nine hundred forty-six million, nine hundred twenty-two thousand, nine hundred seventy-five".