1306125242661 has 8 divisors (see below), whose sum is σ = 1743463687104. Its totient is φ = 869768480000.

The previous prime is 1306125242657. The next prime is 1306125242701. The reversal of 1306125242661 is 1662425216031.

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 1306125242661 - 2² = 1306125242657 is a prime.

It is a super-2 number, since 2×1306125242661² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1306125242641) 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, 245417340 + ... + 245422661.

It is an arithmetic number, because the mean of its divisors is an integer number (217932960888).

Almost surely, 2^{1306125242661} is an apocalyptic number.

It is an amenable number.

1306125242661 is a deficient number, since it is larger than the sum of its proper divisors (437338444443).

1306125242661 is an equidigital number, since it uses as much as digits as its factorization.

1306125242661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 490840891.

The product of its (nonzero) digits is 103680, while the sum is 39.

The spelling of 1306125242661 in words is "one trillion, three hundred six billion, one hundred twenty-five million, two hundred forty-two thousand, six hundred sixty-one".