2639783125069 has 12 divisors (see below), whose sum is σ = 2786478300540. Its totient is φ = 2500446104640.

The previous prime is 2639783125033. The next prime is 2639783125163. The reversal of 2639783125069 is 9605213879362.

It can be written as a sum of positive squares in 2 ways, for example, as 1840466663044 + 799316462025 = 1356638^2 + 894045^2 .

It is not a de Polignac number, because 2639783125069 - 2²³ = 2639774736461 is a prime.

It is a super-3 number, since 3×2639783125069³ (a number of 38 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a junction number, because it is equal to n+sod(n) for n = 2639783124998 and 2639783125016.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2639783125669) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1679889 + ... + 2846329.

It is an arithmetic number, because the mean of its divisors is an integer number (232206525045).

Almost surely, 2^{2639783125069} is an apocalyptic number.

It is an amenable number.

2639783125069 is a deficient number, since it is larger than the sum of its proper divisors (146695175471).

2639783125069 is a wasteful number, since it uses less digits than its factorization.

2639783125069 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1172748 (or 1172729 counting only the distinct ones).

The product of its (nonzero) digits is 29393280, while the sum is 61.

The spelling of 2639783125069 in words is "two trillion, six hundred thirty-nine billion, seven hundred eighty-three million, one hundred twenty-five thousand, sixty-nine".