6121557673768 has 32 divisors (see below), whose sum is σ = 11714490481320. Its totient is φ = 2998109952000.

The previous prime is 6121557673757. The next prime is 6121557673783. The reversal of 6121557673768 is 8673767551216.

It can be written as a sum of positive squares in 4 ways, for example, as 5037789228004 + 1083768445764 = 2244502^2 + 1041042^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25907653 + ... + 26142868.

Almost surely, 2^{6121557673768} is an apocalyptic number.

It is an amenable number.

6121557673768 is a deficient number, since it is larger than the sum of its proper divisors (5592932807552).

6121557673768 is a wasteful number, since it uses less digits than its factorization.

6121557673768 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52050829 (or 52050825 counting only the distinct ones).

The product of its digits is 88905600, while the sum is 64.

The spelling of 6121557673768 in words is "six trillion, one hundred twenty-one billion, five hundred fifty-seven million, six hundred seventy-three thousand, seven hundred sixty-eight".