51505505065151 has 8 divisors (see below), whose sum is σ = 52303957962480. Its totient is φ = 50711287992832.

The previous prime is 51505505065127. The next prime is 51505505065153. The reversal of 51505505065151 is 15156050550515.

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 51505505065151 - 2²² = 51505500870847 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51505505065153) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1058931746 + ... + 1058980383.

It is an arithmetic number, because the mean of its divisors is an integer number (6537994745310).

Almost surely, 2^{51505505065151} is an apocalyptic number.

51505505065151 is a deficient number, since it is larger than the sum of its proper divisors (798452897329).

51505505065151 is a wasteful number, since it uses less digits than its factorization.

51505505065151 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2117912505.

The product of its (nonzero) digits is 468750, while the sum is 44.

The spelling of 51505505065151 in words is "fifty-one trillion, five hundred five billion, five hundred five million, sixty-five thousand, one hundred fifty-one".