331541356025461 has 2 divisors, whose sum is σ = 331541356025462. Its totient is φ = 331541356025460.

The previous prime is 331541356025413. The next prime is 331541356025471. The reversal of 331541356025461 is 164520653145133.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 242129315855025 + 89412040170436 = 15560505^2 + 9455794^2 .

It is a cyclic number.

It is not a de Polignac number, because 331541356025461 - 2¹¹ = 331541356023413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (331541356025401) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165770678012730 + 165770678012731.

It is an arithmetic number, because the mean of its divisors is an integer number (165770678012731).

Almost surely, 2^{331541356025461} is an apocalyptic number.

It is an amenable number.

331541356025461 is a deficient number, since it is larger than the sum of its proper divisors (1).

331541356025461 is an equidigital number, since it uses as much as digits as its factorization.

331541356025461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888000, while the sum is 49.

The spelling of 331541356025461 in words is "three hundred thirty-one trillion, five hundred forty-one billion, three hundred fifty-six million, twenty-five thousand, four hundred sixty-one".