26820001242 has 48 divisors (see below), whose sum is σ = 59002332480. Its totient is φ = 8802832896.

The previous prime is 26820001231. The next prime is 26820001379. The reversal of 26820001242 is 24210002862.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 5633259 + ... + 5638017.

It is an arithmetic number, because the mean of its divisors is an integer number (1229215260).

Almost surely, 2^26820001242 is an apocalyptic number.

26820001242 is an abundant number, since it is smaller than the sum of its proper divisors (32182331238).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

26820001242 is a wasteful number, since it uses less digits than its factorization.

26820001242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9507 (or 9504 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The spelling of 26820001242 in words is "twenty-six billion, eight hundred twenty million, one thousand, two hundred forty-two".