51670533445 has 8 divisors (see below), whose sum is σ = 62036465400. Its totient is φ = 41315209920.

The previous prime is 51670533407. The next prime is 51670533461. The reversal of 51670533445 is 54433507615.

It can be written as a sum of positive squares in 4 ways, for example, as 17861253316 + 33809280129 = 133646^2 + 183873^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 51670533445 - 2²⁹ = 51133662533 is a prime.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2641386 + ... + 2660875.

It is an arithmetic number, because the mean of its divisors is an integer number (7754558175).

Almost surely, 2^51670533445 is an apocalyptic number.

It is an amenable number.

51670533445 is a deficient number, since it is larger than the sum of its proper divisors (10365931955).

51670533445 is a wasteful number, since it uses less digits than its factorization.

51670533445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5304215.

The product of its (nonzero) digits is 756000, while the sum is 43.

The spelling of 51670533445 in words is "fifty-one billion, six hundred seventy million, five hundred thirty-three thousand, four hundred forty-five".