870612158780381 has 2 divisors, whose sum is σ = 870612158780382. Its totient is φ = 870612158780380.

The previous prime is 870612158780327. The next prime is 870612158780383. The reversal of 870612158780381 is 183087851216078.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 747492496215481 + 123119662564900 = 27340309^2 + 11095930^2 .

It is a cyclic number.

It is not a de Polignac number, because 870612158780381 - 2¹⁰ = 870612158779357 is a prime.

It is a super-2 number, since 2×870612158780381² (a number of 31 digits) contains 22 as substring.

Together with 870612158780383, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (870612158780383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435306079390190 + 435306079390191.

It is an arithmetic number, because the mean of its divisors is an integer number (435306079390191).

Almost surely, 2^{870612158780381} is an apocalyptic number.

It is an amenable number.

870612158780381 is a deficient number, since it is larger than the sum of its proper divisors (1).

870612158780381 is an equidigital number, since it uses as much as digits as its factorization.

870612158780381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 36126720, while the sum is 65.

The spelling of 870612158780381 in words is "eight hundred seventy trillion, six hundred twelve billion, one hundred fifty-eight million, seven hundred eighty thousand, three hundred eighty-one".