21344002054 has 4 divisors (see below), whose sum is σ = 32016003084. Its totient is φ = 10672001026.

The previous prime is 21344002019. The next prime is 21344002067. The reversal of 21344002054 is 45020044312.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5336000512 + ... + 5336000515.

It is an arithmetic number, because the mean of its divisors is an integer number (8004000771).

Almost surely, 2^21344002054 is an apocalyptic number.

21344002054 is a deficient number, since it is larger than the sum of its proper divisors (10672001030).

21344002054 is a wasteful number, since it uses less digits than its factorization.

21344002054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10672001029.

The product of its (nonzero) digits is 3840, while the sum is 25.

Adding to 21344002054 its reverse (45020044312), we get a palindrome (66364046366).

The spelling of 21344002054 in words is "twenty-one billion, three hundred forty-four million, two thousand, fifty-four".