12661477086 has 32 divisors (see below), whose sum is σ = 25581074688. Its totient is φ = 4177512000.

The previous prime is 12661477079. The next prime is 12661477123. The reversal of 12661477086 is 68077416621.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1851205 + ... + 1858031.

It is an arithmetic number, because the mean of its divisors is an integer number (799408584).

Almost surely, 2^12661477086 is an apocalyptic number.

12661477086 is an abundant number, since it is smaller than the sum of its proper divisors (12919597602).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

12661477086 is a wasteful number, since it uses less digits than its factorization.

12661477086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9936.

The product of its (nonzero) digits is 677376, while the sum is 48.

The spelling of 12661477086 in words is "twelve billion, six hundred sixty-one million, four hundred seventy-seven thousand, eighty-six".