21063792903842 has 32 divisors (see below), whose sum is σ = 34439795913600. Its totient is φ = 9604065633408.

The previous prime is 21063792903823. The next prime is 21063792903997. The reversal of 21063792903842 is 24830929736012.

It is a super-3 number, since 3×21063792903842³ (a number of 41 digits) contains 333 as substring.

It is a Smith number, since the sum of its digits (56) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

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, 9546467 + ... + 11543942.

It is an arithmetic number, because the mean of its divisors is an integer number (1076243622300).

Almost surely, 2^{21063792903842} is an apocalyptic number.

21063792903842 is a deficient number, since it is larger than the sum of its proper divisors (13376003009758).

21063792903842 is a wasteful number, since it uses less digits than its factorization.

21063792903842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21090890.

The product of its (nonzero) digits is 7838208, while the sum is 56.

The spelling of 21063792903842 in words is "twenty-one trillion, sixty-three billion, seven hundred ninety-two million, nine hundred three thousand, eight hundred forty-two".