6801166730781 has 32 divisors (see below), whose sum is σ = 10319332677120. Its totient is φ = 4425069192192.

The previous prime is 6801166730773. The next prime is 6801166730807. The reversal of 6801166730781 is 1870376611086.

It is not a de Polignac number, because 6801166730781 - 2³ = 6801166730773 is a prime.

It is a super-3 number, since 3×6801166730781³ (a number of 39 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a hoax number, since the sum of its digits (54) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6801166730711) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7143360 + ... + 8039273.

It is an arithmetic number, because the mean of its divisors is an integer number (322479146160).

Almost surely, 2^{6801166730781} is an apocalyptic number.

It is an amenable number.

6801166730781 is a deficient number, since it is larger than the sum of its proper divisors (3518165946339).

6801166730781 is a wasteful number, since it uses less digits than its factorization.

6801166730781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15183042 (or 15183036 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 54.

The spelling of 6801166730781 in words is "six trillion, eight hundred one billion, one hundred sixty-six million, seven hundred thirty thousand, seven hundred eighty-one".