2856161911469 has 2 divisors, whose sum is σ = 2856161911470. Its totient is φ = 2856161911468.

The previous prime is 2856161911441. The next prime is 2856161911523. The reversal of 2856161911469 is 9641191616582.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1925974962025 + 930186949444 = 1387795^2 + 964462^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2856161911469 is a prime.

It is a super-2 number, since 2×2856161911469² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2856161911429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1428080955734 + 1428080955735.

It is an arithmetic number, because the mean of its divisors is an integer number (1428080955735).

Almost surely, 2^{2856161911469} is an apocalyptic number.

It is an amenable number.

2856161911469 is a deficient number, since it is larger than the sum of its proper divisors (1).

2856161911469 is an equidigital number, since it uses as much as digits as its factorization.

2856161911469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5598720, while the sum is 59.

The spelling of 2856161911469 in words is "two trillion, eight hundred fifty-six billion, one hundred sixty-one million, nine hundred eleven thousand, four hundred sixty-nine".