870646577216497 has 2 divisors, whose sum is σ = 870646577216498. Its totient is φ = 870646577216496.

The previous prime is 870646577216401. The next prime is 870646577216501. The reversal of 870646577216497 is 794612775646078.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 593676566899441 + 276970010317056 = 24365479^2 + 16642416^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-870646577216497 is a prime.

It is not a weakly prime, because it can be changed into another prime (870646577216597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435323288608248 + 435323288608249.

It is an arithmetic number, because the mean of its divisors is an integer number (435323288608249).

Almost surely, 2^{870646577216497} is an apocalyptic number.

It is an amenable number.

870646577216497 is a deficient number, since it is larger than the sum of its proper divisors (1).

870646577216497 is an equidigital number, since it uses as much as digits as its factorization.

870646577216497 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5974456320, while the sum is 79.

The spelling of 870646577216497 in words is "eight hundred seventy trillion, six hundred forty-six billion, five hundred seventy-seven million, two hundred sixteen thousand, four hundred ninety-seven".