51500656011505 has 8 divisors (see below), whose sum is σ = 61818633260352. Its totient is φ = 41188627444848.

The previous prime is 51500656011491. The next prime is 51500656011583. The reversal of 51500656011505 is 50511065600515.

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 51500656011505 - 2²⁵ = 51500622457073 is a prime.

It is a Duffinian number.

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, 1487151499 + ... + 1487186128.

It is an arithmetic number, because the mean of its divisors is an integer number (7727329157544).

Almost surely, 2^{51500656011505} is an apocalyptic number.

It is an amenable number.

51500656011505 is a deficient number, since it is larger than the sum of its proper divisors (10317977248847).

51500656011505 is a wasteful number, since it uses less digits than its factorization.

51500656011505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2974341095.

The product of its (nonzero) digits is 112500, while the sum is 40.

The spelling of 51500656011505 in words is "fifty-one trillion, five hundred billion, six hundred fifty-six million, eleven thousand, five hundred five".