51439857369514 has 4 divisors (see below), whose sum is σ = 77159786054274. Its totient is φ = 25719928684756.

The previous prime is 51439857369491. The next prime is 51439857369569. The reversal of 51439857369514 is 41596375893415.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 39760175191489 + 11679682178025 = 6305567^2 + 3417555^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12859964342377 + ... + 12859964342380.

Almost surely, 2^{51439857369514} is an apocalyptic number.

51439857369514 is a deficient number, since it is larger than the sum of its proper divisors (25719928684760).

51439857369514 is a wasteful number, since it uses less digits than its factorization.

51439857369514 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25719928684759.

The product of its digits is 489888000, while the sum is 70.

The spelling of 51439857369514 in words is "fifty-one trillion, four hundred thirty-nine billion, eight hundred fifty-seven million, three hundred sixty-nine thousand, five hundred fourteen".