51206460215 has 8 divisors (see below), whose sum is σ = 61451472768. Its totient is φ = 40962687840.

The previous prime is 51206460209. The next prime is 51206460229.

51206460215 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 51206460215 - 2⁴ = 51206460199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 216647 + ... + 386456.

It is an arithmetic number, because the mean of its divisors is an integer number (7681434096).

Almost surely, 2^51206460215 is an apocalyptic number.

51206460215 is a deficient number, since it is larger than the sum of its proper divisors (10245012553).

51206460215 is a wasteful number, since it uses less digits than its factorization.

51206460215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 620089.

The product of its (nonzero) digits is 14400, while the sum is 32.

The spelling of 51206460215 in words is "fifty-one billion, two hundred six million, four hundred sixty thousand, two hundred fifteen".