51466660289 has 4 divisors (see below), whose sum is σ = 56145447600. Its totient is φ = 46787872980.

The previous prime is 51466660283. The next prime is 51466660307. The reversal of 51466660289 is 98206666415.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 51466660289 - 2¹² = 51466656193 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51466660289.

It is not an unprimeable number, because it can be changed into a prime (51466660283) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2339393639 + ... + 2339393660.

It is an arithmetic number, because the mean of its divisors is an integer number (14036361900).

Almost surely, 2^51466660289 is an apocalyptic number.

It is an amenable number.

51466660289 is a deficient number, since it is larger than the sum of its proper divisors (4678787311).

51466660289 is a wasteful number, since it uses less digits than its factorization.

51466660289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4678787310.

The product of its (nonzero) digits is 3732480, while the sum is 53.

The spelling of 51466660289 in words is "fifty-one billion, four hundred sixty-six million, six hundred sixty thousand, two hundred eighty-nine".