6921861460755 has 32 divisors (see below), whose sum is σ = 11185294095360. Its totient is φ = 3655017699840.

The previous prime is 6921861460729. The next prime is 6921861460781. The reversal of 6921861460755 is 5570641681296.

It is an interprime number because it is at equal distance from previous prime (6921861460729) and next prime (6921861460781).

It is not a de Polignac number, because 6921861460755 - 2⁶ = 6921861460691 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3216795 + ... + 4918484.

It is an arithmetic number, because the mean of its divisors is an integer number (349540440480).

Almost surely, 2^{6921861460755} is an apocalyptic number.

6921861460755 is a deficient number, since it is larger than the sum of its proper divisors (4263432634605).

6921861460755 is a wasteful number, since it uses less digits than its factorization.

6921861460755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8135851.

The product of its (nonzero) digits is 21772800, while the sum is 60.

The spelling of 6921861460755 in words is "six trillion, nine hundred twenty-one billion, eight hundred sixty-one million, four hundred sixty thousand, seven hundred fifty-five".