10621821599 has 2 divisors, whose sum is σ = 10621821600. Its totient is φ = 10621821598.

The previous prime is 10621821571. The next prime is 10621821653. The reversal of 10621821599 is 99512812601.

10621821599 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10621821599 - 2²⁴ = 10605044383 is a prime.

It is a super-2 number, since 2×10621821599² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10621821559) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5310910799 + 5310910800.

It is an arithmetic number, because the mean of its divisors is an integer number (5310910800).

Almost surely, 2^10621821599 is an apocalyptic number.

10621821599 is a deficient number, since it is larger than the sum of its proper divisors (1).

10621821599 is an equidigital number, since it uses as much as digits as its factorization.

10621821599 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 77760, while the sum is 44.

The spelling of 10621821599 in words is "ten billion, six hundred twenty-one million, eight hundred twenty-one thousand, five hundred ninety-nine".