24721745245 has 8 divisors (see below), whose sum is σ = 30083927040. Its totient is φ = 19498841040.

The previous prime is 24721745239. The next prime is 24721745273. The reversal of 24721745245 is 54254712742.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 24721745245 - 2¹⁷ = 24721614173 is a prime.

It is a super-2 number, since 2×24721745245² (a number of 22 digits) contains 22 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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 34819005 + ... + 34819714.

It is an arithmetic number, because the mean of its divisors is an integer number (3760490880).

Almost surely, 2^24721745245 is an apocalyptic number.

It is an amenable number.

24721745245 is a deficient number, since it is larger than the sum of its proper divisors (5362181795).

24721745245 is an equidigital number, since it uses as much as digits as its factorization.

24721745245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69638795.

The product of its digits is 627200, while the sum is 43.

The spelling of 24721745245 in words is "twenty-four billion, seven hundred twenty-one million, seven hundred forty-five thousand, two hundred forty-five".