51545854515 has 8 divisors (see below), whose sum is σ = 82473367248. Its totient is φ = 27491122400.

The previous prime is 51545854487. The next prime is 51545854517.

51545854515 is nontrivially palindromic in base 10.

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

It is not a de Polignac number, because 51545854515 - 2⁷ = 51545854387 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51545854517) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1718195136 + ... + 1718195165.

It is an arithmetic number, because the mean of its divisors is an integer number (10309170906).

Almost surely, 2^51545854515 is an apocalyptic number.

51545854515 is a deficient number, since it is larger than the sum of its proper divisors (30927512733).

51545854515 is a wasteful number, since it uses less digits than its factorization.

51545854515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3436390309.

The product of its digits is 2000000, while the sum is 48.

The spelling of 51545854515 in words is "fifty-one billion, five hundred forty-five million, eight hundred fifty-four thousand, five hundred fifteen".