51280350252718 has 4 divisors (see below), whose sum is σ = 76920525379080. Its totient is φ = 25640175126358.

The previous prime is 51280350252683. The next prime is 51280350252751. The reversal of 51280350252718 is 81725205308215.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12820087563178 + ... + 12820087563181.

It is an arithmetic number, because the mean of its divisors is an integer number (19230131344770).

Almost surely, 2^{51280350252718} is an apocalyptic number.

51280350252718 is a deficient number, since it is larger than the sum of its proper divisors (25640175126362).

51280350252718 is a wasteful number, since it uses less digits than its factorization.

51280350252718 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25640175126361.

The product of its (nonzero) digits is 1344000, while the sum is 49.

The spelling of 51280350252718 in words is "fifty-one trillion, two hundred eighty billion, three hundred fifty million, two hundred fifty-two thousand, seven hundred eighteen".