12661050515628 has 48 divisors (see below), whose sum is σ = 30171417131520. Its totient is φ = 4130500296384.

The previous prime is 12661050515627. The next prime is 12661050515629. The reversal of 12661050515628 is 82651505016621.

It is an interprime number because it is at equal distance from previous prime (12661050515627) and next prime (12661050515629).

It is not an unprimeable number, because it can be changed into a prime (12661050515627) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80761503 + ... + 80918121.

It is an arithmetic number, because the mean of its divisors is an integer number (628571190240).

Almost surely, 2^{12661050515628} is an apocalyptic number.

It is an amenable number.

12661050515628 is an abundant number, since it is smaller than the sum of its proper divisors (17510366615892).

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

12661050515628 is a wasteful number, since it uses less digits than its factorization.

12661050515628 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300006 (or 300004 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 48.

The spelling of 12661050515628 in words is "twelve trillion, six hundred sixty-one billion, fifty million, five hundred fifteen thousand, six hundred twenty-eight".