21403143004 has 12 divisors (see below), whose sum is σ = 39658765104. Its totient is φ = 10072067264.

The previous prime is 21403142989. The next prime is 21403143031. The reversal of 21403143004 is 40034130412.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157375984 + ... + 157376119.

It is an arithmetic number, because the mean of its divisors is an integer number (3304897092).

Almost surely, 2^21403143004 is an apocalyptic number.

It is an amenable number.

21403143004 is a deficient number, since it is larger than the sum of its proper divisors (18255622100).

21403143004 is a wasteful number, since it uses less digits than its factorization.

21403143004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314752124 (or 314752122 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21403143004 its reverse (40034130412), we get a palindrome (61437273416).

The spelling of 21403143004 in words is "twenty-one billion, four hundred three million, one hundred forty-three thousand, four".