870670638846157 has 2 divisors, whose sum is σ = 870670638846158. Its totient is φ = 870670638846156.

The previous prime is 870670638846149. The next prime is 870670638846233. The reversal of 870670638846157 is 751648836076078.

It is an a-pointer prime, because the next prime (870670638846233) can be obtained adding 870670638846157 to its sum of digits (76).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 544936219889161 + 325734418956996 = 23343869^2 + 18048114^2 .

It is a cyclic number.

It is not a de Polignac number, because 870670638846157 - 2³ = 870670638846149 is a prime.

It is a super-2 number, since 2×870670638846157² (a number of 31 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (870670638849157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435335319423078 + 435335319423079.

It is an arithmetic number, because the mean of its divisors is an integer number (435335319423079).

Almost surely, 2^{870670638846157} is an apocalyptic number.

It is an amenable number.

870670638846157 is a deficient number, since it is larger than the sum of its proper divisors (1).

870670638846157 is an equidigital number, since it uses as much as digits as its factorization.

870670638846157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2275983360, while the sum is 76.

The spelling of 870670638846157 in words is "eight hundred seventy trillion, six hundred seventy billion, six hundred thirty-eight million, eight hundred forty-six thousand, one hundred fifty-seven".