6642958072424 has 8 divisors (see below), whose sum is σ = 12455546385810. Its totient is φ = 3321479036208.

The previous prime is 6642958072417. The next prime is 6642958072433. The reversal of 6642958072424 is 4242708592466.

It can be written as a sum of positive squares in only one way, i.e., 5101680516100 + 1541277556324 = 2258690^2 + 1241482^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

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 as a sum of consecutive naturals, namely, 415184879519 + ... + 415184879534.

Almost surely, 2^{6642958072424} is an apocalyptic number.

It is an amenable number.

6642958072424 is a deficient number, since it is larger than the sum of its proper divisors (5812588313386).

6642958072424 is a wasteful number, since it uses less digits than its factorization.

6642958072424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830369759059 (or 830369759055 counting only the distinct ones).

The product of its (nonzero) digits is 46448640, while the sum is 59.

The spelling of 6642958072424 in words is "six trillion, six hundred forty-two billion, nine hundred fifty-eight million, seventy-two thousand, four hundred twenty-four".