24530021451 has 20 divisors (see below), whose sum is σ = 39462353392. Its totient is φ = 15095397168.

The previous prime is 24530021449. The next prime is 24530021473. The reversal of 24530021451 is 15412003542.

It is not a de Polignac number, because 24530021451 - 2¹ = 24530021449 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (24530021431) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 11646631 + ... + 11648736.

Almost surely, 2^24530021451 is an apocalyptic number.

24530021451 is a deficient number, since it is larger than the sum of its proper divisors (14932331941).

24530021451 is a wasteful number, since it uses less digits than its factorization.

24530021451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23295392 (or 23295383 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 27.

Adding to 24530021451 its reverse (15412003542), we get a palindrome (39942024993).

The spelling of 24530021451 in words is "twenty-four billion, five hundred thirty million, twenty-one thousand, four hundred fifty-one".