6754075156521 has 32 divisors (see below), whose sum is σ = 12475059456000. Its totient is φ = 3508610469840.

The previous prime is 6754075156513. The next prime is 6754075156559. The reversal of 6754075156521 is 1256515704576.

6754075156521 is a `hidden beast` number, since 6 + 7 + 5 + 4 + 0 + 7 + 51 + 565 + 21 = 666.

It is not a de Polignac number, because 6754075156521 - 2³ = 6754075156513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (6754075156511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1624354621 + ... + 1624358778.

It is an arithmetic number, because the mean of its divisors is an integer number (389845608000).

Almost surely, 2^{6754075156521} is an apocalyptic number.

It is an amenable number.

6754075156521 is a deficient number, since it is larger than the sum of its proper divisors (5720984299479).

6754075156521 is a wasteful number, since it uses less digits than its factorization.

6754075156521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3248713426 (or 3248713420 counting only the distinct ones).

The product of its (nonzero) digits is 8820000, while the sum is 54.

The spelling of 6754075156521 in words is "six trillion, seven hundred fifty-four billion, seventy-five million, one hundred fifty-six thousand, five hundred twenty-one".