10585880078621 has 2 divisors, whose sum is σ = 10585880078622. Its totient is φ = 10585880078620.

The previous prime is 10585880078603. The next prime is 10585880078677. The reversal of 10585880078621 is 12687008858501.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9407654496100 + 1178225582521 = 3067190^2 + 1085461^2 .

It is a cyclic number.

It is not a de Polignac number, because 10585880078621 - 2²² = 10585875884317 is a prime.

It is a super-2 number, since 2×10585880078621² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10585882078621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5292940039310 + 5292940039311.

It is an arithmetic number, because the mean of its divisors is an integer number (5292940039311).

Almost surely, 2^{10585880078621} is an apocalyptic number.

It is an amenable number.

10585880078621 is a deficient number, since it is larger than the sum of its proper divisors (1).

10585880078621 is an equidigital number, since it uses as much as digits as its factorization.

10585880078621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8601600, while the sum is 59.

The spelling of 10585880078621 in words is "ten trillion, five hundred eighty-five billion, eight hundred eighty million, seventy-eight thousand, six hundred twenty-one".