10999585813 has 2 divisors, whose sum is σ = 10999585814. Its totient is φ = 10999585812.

The previous prime is 10999585799. The next prime is 10999585843. The reversal of 10999585813 is 31858599901.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 10124786884 + 874798929 = 100622^2 + 29577^2 .

It is a cyclic number.

It is not a de Polignac number, because 10999585813 - 2²¹ = 10997488661 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10999585843) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5499792906 + 5499792907.

It is an arithmetic number, because the mean of its divisors is an integer number (5499792907).

Almost surely, 2^10999585813 is an apocalyptic number.

It is an amenable number.

10999585813 is a deficient number, since it is larger than the sum of its proper divisors (1).

10999585813 is an equidigital number, since it uses as much as digits as its factorization.

10999585813 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3499200, while the sum is 58.

The spelling of 10999585813 in words is "ten billion, nine hundred ninety-nine million, five hundred eighty-five thousand, eight hundred thirteen".