6885013892761 has 9 divisors (see below), whose sum is σ = 6905190377631. Its totient is φ = 6864896213784.

The previous prime is 6885013892711. The next prime is 6885013892767. The reversal of 6885013892761 is 1672983105886.

The square root of 6885013892761 is 2623931.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 3042865073161 + 3842148819600 = 1744381^2 + 1960140^2 .

It is not a de Polignac number, because 6885013892761 - 2¹³ = 6885013884569 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 6885013892693 and 6885013892702.

It is not an unprimeable number, because it can be changed into a prime (6885013892767) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 941987575 + ... + 941994883.

Almost surely, 2^{6885013892761} is an apocalyptic number.

6885013892761 is the 2623931-st square number.

6885013892761 is the 1311966-th centered octagonal number.

It is an amenable number.

6885013892761 is a deficient number, since it is larger than the sum of its proper divisors (20176484870).

6885013892761 is an frugal number, since it uses more digits than its factorization.

6885013892761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15336 (or 7668 counting only the distinct ones).

The product of its (nonzero) digits is 34836480, while the sum is 64.

Multiplying 6885013892761 by its sum of digits (64), we get a square (440640889136704 = 20991448²).

The spelling of 6885013892761 in words is "six trillion, eight hundred eighty-five billion, thirteen million, eight hundred ninety-two thousand, seven hundred sixty-one".