21430145004 has 48 divisors (see below), whose sum is σ = 51151177728. Its totient is φ = 6979950208.

The previous prime is 21430144997. The next prime is 21430145017. The reversal of 21430145004 is 40054103412.

It is a super-2 number, since 2×21430145004² (a number of 21 digits) contains 22 as substring.

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, 317197 + ... + 378779.

It is an arithmetic number, because the mean of its divisors is an integer number (1065649536).

Almost surely, 2^21430145004 is an apocalyptic number.

It is an amenable number.

21430145004 is an abundant number, since it is smaller than the sum of its proper divisors (29721032724).

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

21430145004 is a wasteful number, since it uses less digits than its factorization.

21430145004 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 62254 (or 62252 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

Adding to 21430145004 its reverse (40054103412), we get a palindrome (61484248416).

The spelling of 21430145004 in words is "twenty-one billion, four hundred thirty million, one hundred forty-five thousand, four".