7829650971649 has 16 divisors (see below), whose sum is σ = 8885651814144. Its totient is φ = 6844689720000.

The previous prime is 7829650971641. The next prime is 7829650971661. The reversal of 7829650971649 is 9461790569287.

It is a cyclic number.

It is not a de Polignac number, because 7829650971649 - 2³ = 7829650971641 is a prime.

It is a super-2 number, since 2×7829650971649² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7829650971641) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 129604077 + ... + 129664474.

It is an arithmetic number, because the mean of its divisors is an integer number (555353238384).

Almost surely, 2^{7829650971649} is an apocalyptic number.

It is an amenable number.

7829650971649 is a deficient number, since it is larger than the sum of its proper divisors (1056000842495).

7829650971649 is a wasteful number, since it uses less digits than its factorization.

7829650971649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 259268688.

The product of its (nonzero) digits is 411505920, while the sum is 73.

The spelling of 7829650971649 in words is "seven trillion, eight hundred twenty-nine billion, six hundred fifty million, nine hundred seventy-one thousand, six hundred forty-nine".