870646122117407 has 2 divisors, whose sum is σ = 870646122117408. Its totient is φ = 870646122117406.

The previous prime is 870646122117323. The next prime is 870646122117413. The reversal of 870646122117407 is 704711221646078.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-870646122117407 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (870646122110407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435323061058703 + 435323061058704.

It is an arithmetic number, because the mean of its divisors is an integer number (435323061058704).

Almost surely, 2^{870646122117407} is an apocalyptic number.

870646122117407 is a deficient number, since it is larger than the sum of its proper divisors (1).

870646122117407 is an equidigital number, since it uses as much as digits as its factorization.

870646122117407 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6322176, while the sum is 56.

The spelling of 870646122117407 in words is "eight hundred seventy trillion, six hundred forty-six billion, one hundred twenty-two million, one hundred seventeen thousand, four hundred seven".