51643526600433 has 4 divisors (see below), whose sum is σ = 68858035467248. Its totient is φ = 34429017733620.

The previous prime is 51643526600401. The next prime is 51643526600473. The reversal of 51643526600433 is 33400662534615.

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 not a de Polignac number, because 51643526600433 - 2⁵ = 51643526600401 is a prime.

It is a super-5 number, since 5×51643526600433⁵ (a number of 70 digits) contains 55555 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51643526600473) 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, 8607254433403 + ... + 8607254433408.

It is an arithmetic number, because the mean of its divisors is an integer number (17214508866812).

Almost surely, 2^{51643526600433} is an apocalyptic number.

It is an amenable number.

51643526600433 is a deficient number, since it is larger than the sum of its proper divisors (17214508866815).

51643526600433 is a wasteful number, since it uses less digits than its factorization.

51643526600433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17214508866814.

The product of its (nonzero) digits is 4665600, while the sum is 48.

The spelling of 51643526600433 in words is "fifty-one trillion, six hundred forty-three billion, five hundred twenty-six million, six hundred thousand, four hundred thirty-three".