8013159670261 has 2 divisors, whose sum is σ = 8013159670262. Its totient is φ = 8013159670260.

The previous prime is 8013159670249. The next prime is 8013159670331. The reversal of 8013159670261 is 1620769513108.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 6832447071025 + 1180712599236 = 2613895^2 + 1086606^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8013159670261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8013159670861) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4006579835130 + 4006579835131.

It is an arithmetic number, because the mean of its divisors is an integer number (4006579835131).

Almost surely, 2^{8013159670261} is an apocalyptic number.

It is an amenable number.

8013159670261 is a deficient number, since it is larger than the sum of its proper divisors (1).

8013159670261 is an equidigital number, since it uses as much as digits as its factorization.

8013159670261 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 544320, while the sum is 49.

The spelling of 8013159670261 in words is "eight trillion, thirteen billion, one hundred fifty-nine million, six hundred seventy thousand, two hundred sixty-one".