12702815909 has 12 divisors (see below), whose sum is σ = 14846789088. Its totient is φ = 10836516600.

The previous prime is 12702815899. The next prime is 12702815929. The reversal of 12702815909 is 90951820721.

It is a happy number.

It is not a de Polignac number, because 12702815909 - 2¹⁶ = 12702750373 is a prime.

It is a super-2 number, since 2×12702815909² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12702815909.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12702815929) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 603977 + ... + 624654.

It is an arithmetic number, because the mean of its divisors is an integer number (1237232424).

Almost surely, 2^12702815909 is an apocalyptic number.

It is an amenable number.

12702815909 is a deficient number, since it is larger than the sum of its proper divisors (2143973179).

12702815909 is a wasteful number, since it uses less digits than its factorization.

12702815909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1228856 (or 1228849 counting only the distinct ones).

The product of its (nonzero) digits is 90720, while the sum is 44.

The spelling of 12702815909 in words is "twelve billion, seven hundred two million, eight hundred fifteen thousand, nine hundred nine".