191361002461 has 2 divisors, whose sum is σ = 191361002462. Its totient is φ = 191361002460.

The previous prime is 191361002449. The next prime is 191361002473. The reversal of 191361002461 is 164200163191.

It is a balanced prime because it is at equal distance from previous prime (191361002449) and next prime (191361002473).

It can be written as a sum of positive squares in only one way, i.e., 184496879961 + 6864122500 = 429531^2 + 82850^2 .

It is an emirp because it is prime and its reverse (164200163191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 191361002461 - 2⁵ = 191361002429 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (191361000461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95680501230 + 95680501231.

It is an arithmetic number, because the mean of its divisors is an integer number (95680501231).

Almost surely, 2^191361002461 is an apocalyptic number.

It is an amenable number.

191361002461 is a deficient number, since it is larger than the sum of its proper divisors (1).

191361002461 is an equidigital number, since it uses as much as digits as its factorization.

191361002461 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7776, while the sum is 34.

The spelling of 191361002461 in words is "one hundred ninety-one billion, three hundred sixty-one million, two thousand, four hundred sixty-one".