11643264457 has 8 divisors (see below), whose sum is σ = 12971993472. Its totient is φ = 10359577200.

The previous prime is 11643264449. The next prime is 11643264461. The reversal of 11643264457 is 75446234611.

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

It is a cyclic number.

It is not a de Polignac number, because 11643264457 - 2³ = 11643264449 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11643274457) 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, 11259894 + ... + 11260927.

It is an arithmetic number, because the mean of its divisors is an integer number (1621499184).

Almost surely, 2^11643264457 is an apocalyptic number.

It is an amenable number.

11643264457 is a deficient number, since it is larger than the sum of its proper divisors (1328729015).

11643264457 is a wasteful number, since it uses less digits than its factorization.

11643264457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22520879.

The product of its digits is 483840, while the sum is 43.

The spelling of 11643264457 in words is "eleven billion, six hundred forty-three million, two hundred sixty-four thousand, four hundred fifty-seven".