83013812660381 has 2 divisors, whose sum is σ = 83013812660382. Its totient is φ = 83013812660380.

The previous prime is 83013812660377. The next prime is 83013812660413. The reversal of 83013812660381 is 18306621831038.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 45846914971225 + 37166897689156 = 6771035^2 + 6096466^2 .

It is a cyclic number.

It is not a de Polignac number, because 83013812660381 - 2² = 83013812660377 is a prime.

It is a super-2 number, since 2×83013812660381² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (83013812660281) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41506906330190 + 41506906330191.

It is an arithmetic number, because the mean of its divisors is an integer number (41506906330191).

Almost surely, 2^{83013812660381} is an apocalyptic number.

It is an amenable number.

83013812660381 is a deficient number, since it is larger than the sum of its proper divisors (1).

83013812660381 is an equidigital number, since it uses as much as digits as its factorization.

83013812660381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 995328, while the sum is 50.

The spelling of 83013812660381 in words is "eighty-three trillion, thirteen billion, eight hundred twelve million, six hundred sixty thousand, three hundred eighty-one".