24945397247 has 6 divisors (see below), whose sum is σ = 26030770152. Its totient is φ = 23860090232.

The previous prime is 24945397241. The next prime is 24945397273. The reversal of 24945397247 is 74279354942.

It is a de Polignac number, because none of the positive numbers 2^k-24945397247 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 24945397192 and 24945397201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (24945397241) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 740993 + ... + 773925.

It is an arithmetic number, because the mean of its divisors is an integer number (4338461692).

Almost surely, 2^24945397247 is an apocalyptic number.

24945397247 is a deficient number, since it is larger than the sum of its proper divisors (1085372905).

24945397247 is an frugal number, since it uses more digits than its factorization.

24945397247 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 65889 (or 32956 counting only the distinct ones).

The product of its digits is 15240960, while the sum is 56.

The spelling of 24945397247 in words is "twenty-four billion, nine hundred forty-five million, three hundred ninety-seven thousand, two hundred forty-seven".