24720809472 has 80 divisors (see below), whose sum is σ = 73175353680. Its totient is φ = 8240265216.

The previous prime is 24720809447. The next prime is 24720809473. The reversal of 24720809472 is 27490802742.

It is a super-2 number, since 2×24720809472² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24720809473) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 880303 + ... + 907950.

It is an arithmetic number, because the mean of its divisors is an integer number (914691921).

Almost surely, 2^24720809472 is an apocalyptic number.

It is an amenable number.

24720809472 is an abundant number, since it is smaller than the sum of its proper divisors (48454544208).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

24720809472 is an equidigital number, since it uses as much as digits as its factorization.

24720809472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1788280 (or 1788258 counting only the distinct ones).

The product of its (nonzero) digits is 451584, while the sum is 45.

The spelling of 24720809472 in words is "twenty-four billion, seven hundred twenty million, eight hundred nine thousand, four hundred seventy-two".