15242124661 has 2 divisors, whose sum is σ = 15242124662. Its totient is φ = 15242124660.

The previous prime is 15242124659. The next prime is 15242124701. The reversal of 15242124661 is 16642124251.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 9866448900 + 5375675761 = 99330^2 + 73319^2 .

It is a cyclic number.

It is not a de Polignac number, because 15242124661 - 2¹ = 15242124659 is a prime.

Together with 15242124659, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (15242122661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7621062330 + 7621062331.

It is an arithmetic number, because the mean of its divisors is an integer number (7621062331).

Almost surely, 2^15242124661 is an apocalyptic number.

It is an amenable number.

15242124661 is a deficient number, since it is larger than the sum of its proper divisors (1).

15242124661 is an equidigital number, since it uses as much as digits as its factorization.

15242124661 is an evil number, because the sum of its binary digits is even.

The product of its digits is 23040, while the sum is 34.

The spelling of 15242124661 in words is "fifteen billion, two hundred forty-two million, one hundred twenty-four thousand, six hundred sixty-one".