51764722563 has 4 divisors (see below), whose sum is σ = 69019630088. Its totient is φ = 34509815040.

The previous prime is 51764722519. The next prime is 51764722573. The reversal of 51764722563 is 36522746715.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 51764722563 - 2¹⁰ = 51764721539 is a prime.

It is a super-2 number, since 2×51764722563² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51764722573) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8627453758 + ... + 8627453763.

It is an arithmetic number, because the mean of its divisors is an integer number (17254907522).

Almost surely, 2^51764722563 is an apocalyptic number.

51764722563 is a deficient number, since it is larger than the sum of its proper divisors (17254907525).

51764722563 is a wasteful number, since it uses less digits than its factorization.

51764722563 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17254907524.

The product of its digits is 2116800, while the sum is 48.

The spelling of 51764722563 in words is "fifty-one billion, seven hundred sixty-four million, seven hundred twenty-two thousand, five hundred sixty-three".