21442152604 has 12 divisors (see below), whose sum is σ = 37975861224. Its totient is φ = 10591906544.

The previous prime is 21442152539. The next prime is 21442152647. The reversal of 21442152604 is 40625124412.

It is a super-3 number, since 3×21442152604³ (a number of 32 digits) contains 333 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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32292067 + ... + 32292730.

It is an arithmetic number, because the mean of its divisors is an integer number (3164655102).

Almost surely, 2^21442152604 is an apocalyptic number.

It is an amenable number.

21442152604 is a deficient number, since it is larger than the sum of its proper divisors (16533708620).

21442152604 is a wasteful number, since it uses less digits than its factorization.

21442152604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64584884 (or 64584882 counting only the distinct ones).

The product of its (nonzero) digits is 15360, while the sum is 31.

The spelling of 21442152604 in words is "twenty-one billion, four hundred forty-two million, one hundred fifty-two thousand, six hundred four".