51726324249599 has 4 divisors (see below), whose sum is σ = 52826884340064. Its totient is φ = 50625764159136.

The previous prime is 51726324249577. The next prime is 51726324249641. The reversal of 51726324249599 is 99594242362715.

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

It is a cyclic number.

It is not a de Polignac number, because 51726324249599 - 2¹⁶ = 51726324184063 is a prime.

It is a super-2 number, since 2×51726324249599² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51726324245599) 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, 550280045162 + ... + 550280045255.

It is an arithmetic number, because the mean of its divisors is an integer number (13206721085016).

Almost surely, 2^{51726324249599} is an apocalyptic number.

51726324249599 is a deficient number, since it is larger than the sum of its proper divisors (1100560090465).

51726324249599 is a wasteful number, since it uses less digits than its factorization.

51726324249599 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100560090464.

The product of its digits is 293932800, while the sum is 68.

The spelling of 51726324249599 in words is "fifty-one trillion, seven hundred twenty-six billion, three hundred twenty-four million, two hundred forty-nine thousand, five hundred ninety-nine".