10642689529 has 2 divisors, whose sum is σ = 10642689530. Its totient is φ = 10642689528.

The previous prime is 10642689527. The next prime is 10642689599. The reversal of 10642689529 is 92598624601.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10169714025 + 472975504 = 100845^2 + 21748^2 .

It is a cyclic number.

It is not a de Polignac number, because 10642689529 - 2¹ = 10642689527 is a prime.

It is a super-2 number, since 2×10642689529² (a number of 21 digits) contains 22 as substring.

Together with 10642689527, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (10642689521) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5321344764 + 5321344765.

It is an arithmetic number, because the mean of its divisors is an integer number (5321344765).

Almost surely, 2^10642689529 is an apocalyptic number.

It is an amenable number.

10642689529 is a deficient number, since it is larger than the sum of its proper divisors (1).

10642689529 is an equidigital number, since it uses as much as digits as its factorization.

10642689529 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1866240, while the sum is 52.

The spelling of 10642689529 in words is "ten billion, six hundred forty-two million, six hundred eighty-nine thousand, five hundred twenty-nine".