51304250540545 has 16 divisors (see below), whose sum is σ = 65043099740160. Its totient is φ = 38784959464384.

The previous prime is 51304250540513. The next prime is 51304250540549. The reversal of 51304250540545 is 54504505240315.

It is a cyclic number.

It is not a de Polignac number, because 51304250540545 - 2⁵ = 51304250540513 is a prime.

It is a super-2 number, since 2×51304250540545² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51304250540549) 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 15 ways as a sum of consecutive naturals, for example, 3764061457 + ... + 3764075086.

It is an arithmetic number, because the mean of its divisors is an integer number (4065193733760).

Almost surely, 2^{51304250540545} is an apocalyptic number.

It is an amenable number.

51304250540545 is a deficient number, since it is larger than the sum of its proper divisors (13738849199615).

51304250540545 is a wasteful number, since it uses less digits than its factorization.

51304250540545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7528136624.

The product of its (nonzero) digits is 1200000, while the sum is 43.

The spelling of 51304250540545 in words is "fifty-one trillion, three hundred four billion, two hundred fifty million, five hundred forty thousand, five hundred forty-five".