12415510681 has 12 divisors (see below), whose sum is σ = 14444362020. Its totient is φ = 10640518560.

The previous prime is 12415510663. The next prime is 12415510693. The reversal of 12415510681 is 18601551421.

It can be written as a sum of positive squares in 2 ways, for example, as 4403649600 + 8011861081 = 66360^2 + 89509^2 .

It is not a de Polignac number, because 12415510681 - 2⁵ = 12415510649 is a prime.

It is a super-2 number, since 2×12415510681² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12415510631) 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, 678391 + ... + 696451.

It is an arithmetic number, because the mean of its divisors is an integer number (1203696835).

Almost surely, 2^12415510681 is an apocalyptic number.

It is an amenable number.

12415510681 is a deficient number, since it is larger than the sum of its proper divisors (2028851339).

12415510681 is a wasteful number, since it uses less digits than its factorization.

12415510681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32104 (or 32097 counting only the distinct ones).

The product of its (nonzero) digits is 9600, while the sum is 34.

The spelling of 12415510681 in words is "twelve billion, four hundred fifteen million, five hundred ten thousand, six hundred eighty-one".