26820898475 has 72 divisors (see below), whose sum is σ = 39707458560. Its totient is φ = 17909398080.

The previous prime is 26820898459. The next prime is 26820898477. The reversal of 26820898475 is 57489802862.

It is not a de Polignac number, because 26820898475 - 2⁴ = 26820898459 is a prime.

It is not an unprimeable number, because it can be changed into a prime (26820898477) by changing a digit.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 25230794 + ... + 25231856.

It is an arithmetic number, because the mean of its divisors is an integer number (551492480).

Almost surely, 2^26820898475 is an apocalyptic number.

26820898475 is a gapful number since it is divisible by the number (25) formed by its first and last digit.

26820898475 is a deficient number, since it is larger than the sum of its proper divisors (12886560085).

26820898475 is a wasteful number, since it uses less digits than its factorization.

26820898475 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1609 (or 1597 counting only the distinct ones).

The product of its (nonzero) digits is 15482880, while the sum is 59.

The spelling of 26820898475 in words is "twenty-six billion, eight hundred twenty million, eight hundred ninety-eight thousand, four hundred seventy-five".