21245428018310 has 16 divisors (see below), whose sum is σ = 38241882269136. Its totient is φ = 8498146354848.

The previous prime is 21245428018303. The next prime is 21245428018337. The reversal of 21245428018310 is 1381082454212.

It is a super-2 number, since 2×21245428018310² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 706757 + ... + 6556703.

It is an arithmetic number, because the mean of its divisors is an integer number (2390117641821).

Almost surely, 2^{21245428018310} is an apocalyptic number.

21245428018310 is a deficient number, since it is larger than the sum of its proper divisors (16996454250826).

21245428018310 is a wasteful number, since it uses less digits than its factorization.

21245428018310 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6213127.

The product of its (nonzero) digits is 122880, while the sum is 41.

The spelling of 21245428018310 in words is "twenty-one trillion, two hundred forty-five billion, four hundred twenty-eight million, eighteen thousand, three hundred ten".