6849721764990 has 96 divisors (see below), whose sum is σ = 19697578389216. Its totient is φ = 1640515472640.

The previous prime is 6849721764961. The next prime is 6849721765031. The reversal of 6849721764990 is 994671279486.

6849721764990 is a `hidden beast` number, since 6 + 8 + 49 + 7 + 21 + 76 + 499 + 0 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 79071076 + ... + 79157655.

It is an arithmetic number, because the mean of its divisors is an integer number (205183108221).

Almost surely, 2^{6849721764990} is an apocalyptic number.

6849721764990 is an abundant number, since it is smaller than the sum of its proper divisors (12847856624226).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

6849721764990 is a wasteful number, since it uses less digits than its factorization.

6849721764990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158228794 (or 158228791 counting only the distinct ones).

The product of its (nonzero) digits is 329204736, while the sum is 72.

The spelling of 6849721764990 in words is "six trillion, eight hundred forty-nine billion, seven hundred twenty-one million, seven hundred sixty-four thousand, nine hundred ninety".