12502151661 has 8 divisors (see below), whose sum is σ = 16670725344.
Its totient is φ = 8334172880.
The previous prime is 12502151587. The next prime is 12502151719. The reversal of 12502151661 is 16615120521.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 12502151661 - 223 = 12493763053 is a prime.
It is a Curzon number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (12502151461) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 97131 + ... + 185576.
It is an arithmetic number, because the mean of its divisors is an integer number (2083840668).
Almost surely, 212502151661 is an apocalyptic number.
It is an amenable number.
12502151661 is a deficient number, since it is larger than the sum of its proper divisors (4168573683).
12502151661 is a wasteful number, since it uses less digits than its factorization.
12502151661 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 297451.
The product of its (nonzero) digits is 3600, while the sum is 30.
The spelling of 12502151661 in words is "twelve billion, five hundred two million, one hundred fifty-one thousand, six hundred sixty-one".