21040255510244 has 48 divisors (see below), whose sum is σ = 37507031732352. Its totient is φ = 10325155180032.

The previous prime is 21040255510181. The next prime is 21040255510271. The reversal of 21040255510244 is 44201555204012.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 130606754 + ... + 130767750.

It is an arithmetic number, because the mean of its divisors is an integer number (781396494424).

Almost surely, 2^{21040255510244} is an apocalyptic number.

It is an amenable number.

21040255510244 is a deficient number, since it is larger than the sum of its proper divisors (16466776222108).

21040255510244 is a wasteful number, since it uses less digits than its factorization.

21040255510244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162852 (or 162850 counting only the distinct ones).

The product of its (nonzero) digits is 64000, while the sum is 35.

The spelling of 21040255510244 in words is "twenty-one trillion, forty billion, two hundred fifty-five million, five hundred ten thousand, two hundred forty-four".