10521816079 has 2 divisors, whose sum is σ = 10521816080. Its totient is φ = 10521816078.

The previous prime is 10521816061. The next prime is 10521816191. The reversal of 10521816079 is 97061812501.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 10521816079 - 2¹⁹ = 10521291791 is a prime.

It is a super-2 number, since 2×10521816079² (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 (10521819079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5260908039 + 5260908040.

It is an arithmetic number, because the mean of its divisors is an integer number (5260908040).

Almost surely, 2^10521816079 is an apocalyptic number.

10521816079 is a deficient number, since it is larger than the sum of its proper divisors (1).

10521816079 is an equidigital number, since it uses as much as digits as its factorization.

10521816079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30240, while the sum is 40.

The spelling of 10521816079 in words is "ten billion, five hundred twenty-one million, eight hundred sixteen thousand, seventy-nine".