2079680857681 has 8 divisors (see below), whose sum is σ = 2400310580544. Its totient is φ = 1764934249200.

The previous prime is 2079680857651. The next prime is 2079680857697. The reversal of 2079680857681 is 1867580869702.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2079680857681 - 2²⁷ = 2079546639953 is a prime.

It is a super-2 number, since 2×2079680857681² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2079680857651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1470777835 + ... + 1470779248.

It is an arithmetic number, because the mean of its divisors is an integer number (300038822568).

Almost surely, 2^{2079680857681} is an apocalyptic number.

It is an amenable number.

2079680857681 is a deficient number, since it is larger than the sum of its proper divisors (320629722863).

2079680857681 is a wasteful number, since it uses less digits than its factorization.

2079680857681 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2941557191.

The product of its (nonzero) digits is 81285120, while the sum is 67.

The spelling of 2079680857681 in words is "two trillion, seventy-nine billion, six hundred eighty million, eight hundred fifty-seven thousand, six hundred eighty-one".