6921861460730 has 32 divisors (see below), whose sum is σ = 12630289803264. Its totient is φ = 2730759682176.

The previous prime is 6921861460729. The next prime is 6921861460781. The reversal of 6921861460730 is 370641681296.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 59953439 + ... + 60068781.

It is an arithmetic number, because the mean of its divisors is an integer number (394696556352).

Almost surely, 2^{6921861460730} is an apocalyptic number.

6921861460730 is a deficient number, since it is larger than the sum of its proper divisors (5708428342534).

6921861460730 is a wasteful number, since it uses less digits than its factorization.

6921861460730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 197630.

The product of its (nonzero) digits is 2612736, while the sum is 53.

The spelling of 6921861460730 in words is "six trillion, nine hundred twenty-one billion, eight hundred sixty-one million, four hundred sixty thousand, seven hundred thirty".