51964388277 has 4 divisors (see below), whose sum is σ = 69285851040. Its totient is φ = 34642925516.

The previous prime is 51964388249. The next prime is 51964388297. The reversal of 51964388277 is 77288346915.

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 51964388277 - 2⁶ = 51964388213 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 51964388277.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51964388227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8660731377 + ... + 8660731382.

It is an arithmetic number, because the mean of its divisors is an integer number (17321462760).

Almost surely, 2^51964388277 is an apocalyptic number.

It is an amenable number.

51964388277 is a deficient number, since it is larger than the sum of its proper divisors (17321462763).

51964388277 is a wasteful number, since it uses less digits than its factorization.

51964388277 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17321462762.

The product of its digits is 20321280, while the sum is 60.

The spelling of 51964388277 in words is "fifty-one billion, nine hundred sixty-four million, three hundred eighty-eight thousand, two hundred seventy-seven".