21146303004 has 48 divisors (see below), whose sum is σ = 51957091200. Its totient is φ = 6675362496.

The previous prime is 21146302999. The next prime is 21146303047. The reversal of 21146303004 is 40030364112.

It is a super-2 number, since 2×21146303004² (a number of 21 digits) contains 22 as substring.

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 15 ways as a sum of consecutive naturals, for example, 677167 + ... + 707705.

It is an arithmetic number, because the mean of its divisors is an integer number (1082439400).

Almost surely, 2^21146303004 is an apocalyptic number.

It is an amenable number.

21146303004 is an abundant number, since it is smaller than the sum of its proper divisors (30810788196).

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

21146303004 is a wasteful number, since it uses less digits than its factorization.

21146303004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33602 (or 33600 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21146303004 its reverse (40030364112), we get a palindrome (61176667116).

The spelling of 21146303004 in words is "twenty-one billion, one hundred forty-six million, three hundred three thousand, four".