21048042826248 has 32 divisors (see below), whose sum is σ = 52620815788800. Its totient is φ = 7015919779008.

The previous prime is 21048042826231. The next prime is 21048042826253. The reversal of 21048042826248 is 84262824084012.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 21048042826248.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4075411 + ... + 7661922.

It is an arithmetic number, because the mean of its divisors is an integer number (1644400493400).

Almost surely, 2^{21048042826248} is an apocalyptic number.

It is an amenable number.

21048042826248 is an abundant number, since it is smaller than the sum of its proper divisors (31572772962552).

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

21048042826248 is a wasteful number, since it uses less digits than its factorization.

21048042826248 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11812061 (or 11812057 counting only the distinct ones).

The product of its (nonzero) digits is 3145728, while the sum is 51.

The spelling of 21048042826248 in words is "twenty-one trillion, forty-eight billion, forty-two million, eight hundred twenty-six thousand, two hundred forty-eight".