51971417915 has 8 divisors (see below), whose sum is σ = 65648106960. Its totient is φ = 39388864032.

The previous prime is 51971417899. The next prime is 51971417921.

51971417915 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 51971417915 - 2⁴ = 51971417899 is a prime.

It is a super-3 number, since 3×51971417915³ (a number of 33 digits) contains 333 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 273533684 + ... + 273533873.

It is an arithmetic number, because the mean of its divisors is an integer number (8206013370).

Almost surely, 2^51971417915 is an apocalyptic number.

51971417915 is a deficient number, since it is larger than the sum of its proper divisors (13676689045).

51971417915 is a wasteful number, since it uses less digits than its factorization.

51971417915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547067581.

The product of its digits is 396900, while the sum is 50.

The spelling of 51971417915 in words is "fifty-one billion, nine hundred seventy-one million, four hundred seventeen thousand, nine hundred fifteen".