2635878685469 has 2 divisors, whose sum is σ = 2635878685470. Its totient is φ = 2635878685468.

The previous prime is 2635878685417. The next prime is 2635878685493. The reversal of 2635878685469 is 9645868785362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1363144981444 + 1272733704025 = 1167538^2 + 1128155^2 .

It is a cyclic number.

It is not a de Polignac number, because 2635878685469 - 2²⁰ = 2635877636893 is a prime.

It is a super-2 number, since 2×2635878685469² (a number of 26 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2635878685469.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2635878685169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1317939342734 + 1317939342735.

It is an arithmetic number, because the mean of its divisors is an integer number (1317939342735).

Almost surely, 2^{2635878685469} is an apocalyptic number.

It is an amenable number.

2635878685469 is a deficient number, since it is larger than the sum of its proper divisors (1).

2635878685469 is an equidigital number, since it uses as much as digits as its factorization.

2635878685469 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4180377600, while the sum is 77.

The spelling of 2635878685469 in words is "two trillion, six hundred thirty-five billion, eight hundred seventy-eight million, six hundred eighty-five thousand, four hundred sixty-nine".