2000979678869 has 2 divisors, whose sum is σ = 2000979678870. Its totient is φ = 2000979678868.

The previous prime is 2000979678853. The next prime is 2000979678883. The reversal of 2000979678869 is 9688769790002.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1617958560100 + 383021118769 = 1271990^2 + 618887^2 .

It is a cyclic number.

It is not a de Polignac number, because 2000979678869 - 2⁴ = 2000979678853 is a prime.

It is a super-2 number, since 2×2000979678869² (a number of 25 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2000979678829) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1000489839434 + 1000489839435.

It is an arithmetic number, because the mean of its divisors is an integer number (1000489839435).

Almost surely, 2^{2000979678869} is an apocalyptic number.

It is an amenable number.

2000979678869 is a deficient number, since it is larger than the sum of its proper divisors (1).

2000979678869 is an equidigital number, since it uses as much as digits as its factorization.

2000979678869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 164602368, while the sum is 71.

The spelling of 2000979678869 in words is "two trillion, nine hundred seventy-nine million, six hundred seventy-eight thousand, eight hundred sixty-nine".