57247909649 has 8 divisors (see below), whose sum is σ = 69274781568. Its totient is φ = 46183187520.

The previous prime is 57247909583. The next prime is 57247909661. The reversal of 57247909649 is 94690974275.

57247909649 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57247909649 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 57247909591 and 57247909600.

It is not an unprimeable number, because it can be changed into a prime (57247909699) 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, 240537317 + ... + 240537554.

It is an arithmetic number, because the mean of its divisors is an integer number (8659347696).

Almost surely, 2^57247909649 is an apocalyptic number.

It is an amenable number.

57247909649 is a deficient number, since it is larger than the sum of its proper divisors (12026871919).

57247909649 is a wasteful number, since it uses less digits than its factorization.

57247909649 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481074895.

The product of its (nonzero) digits is 34292160, while the sum is 62.

The spelling of 57247909649 in words is "fifty-seven billion, two hundred forty-seven million, nine hundred nine thousand, six hundred forty-nine".