315012062621661 has 4 divisors (see below), whose sum is σ = 420016083495552. Its totient is φ = 210008041747772.

The previous prime is 315012062621471. The next prime is 315012062621701. The reversal of 315012062621661 is 166126260210513.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 315012062621661 - 2¹⁹ = 315012062097373 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (315012062621461) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 52502010436941 + ... + 52502010436946.

It is an arithmetic number, because the mean of its divisors is an integer number (105004020873888).

Almost surely, 2^{315012062621661} is an apocalyptic number.

It is an amenable number.

315012062621661 is a deficient number, since it is larger than the sum of its proper divisors (105004020873891).

315012062621661 is a wasteful number, since it uses less digits than its factorization.

315012062621661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105004020873890.

The product of its (nonzero) digits is 155520, while the sum is 42.

The spelling of 315012062621661 in words is "three hundred fifteen trillion, twelve billion, sixty-two million, six hundred twenty-one thousand, six hundred sixty-one".