870920569499 has 2 divisors, whose sum is σ = 870920569500. Its totient is φ = 870920569498.

The previous prime is 870920569481. The next prime is 870920569507. The reversal of 870920569499 is 994965029078.

870920569499 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-870920569499 is a prime.

It is a super-2 number, since 2×870920569499² (a number of 25 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (870920569429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 435460284749 + 435460284750.

It is an arithmetic number, because the mean of its divisors is an integer number (435460284750).

Almost surely, 2^870920569499 is an apocalyptic number.

870920569499 is a deficient number, since it is larger than the sum of its proper divisors (1).

870920569499 is an equidigital number, since it uses as much as digits as its factorization.

870920569499 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 88179840, while the sum is 68.

The spelling of 870920569499 in words is "eight hundred seventy billion, nine hundred twenty million, five hundred sixty-nine thousand, four hundred ninety-nine".