26820517419 has 90 divisors (see below), whose sum is σ = 43010338140. Its totient is φ = 16649824752.

The previous prime is 26820517417. The next prime is 26820517433. The reversal of 26820517419 is 91471502862.

26820517419 is a `hidden beast` number, since 26 + 8 + 205 + 1 + 7 + 419 = 666.

It is not a de Polignac number, because 26820517419 - 2¹ = 26820517417 is a prime.

It is a super-2 number, since 2×26820517419² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (26820517417) by changing a digit.

It is a polite number, since it can be written in 89 ways as a sum of consecutive naturals, for example, 260393322 + ... + 260393424.

It is an arithmetic number, because the mean of its divisors is an integer number (477892646).

Almost surely, 2^26820517419 is an apocalyptic number.

26820517419 is a deficient number, since it is larger than the sum of its proper divisors (16189820721).

26820517419 is an equidigital number, since it uses as much as digits as its factorization.

26820517419 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 323 (or 188 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The spelling of 26820517419 in words is "twenty-six billion, eight hundred twenty million, five hundred seventeen thousand, four hundred nineteen".