51082213551 has 8 divisors (see below), whose sum is σ = 68118509184. Its totient is φ = 34050363480.

The previous prime is 51082213543. The next prime is 51082213573. The reversal of 51082213551 is 15531228015.

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

It is not a de Polignac number, because 51082213551 - 2³ = 51082213543 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51082215551) 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, 1084485 + ... + 1130606.

It is an arithmetic number, because the mean of its divisors is an integer number (8514813648).

Almost surely, 2^51082213551 is an apocalyptic number.

51082213551 is a deficient number, since it is larger than the sum of its proper divisors (17036295633).

51082213551 is a wasteful number, since it uses less digits than its factorization.

51082213551 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2222781.

The product of its (nonzero) digits is 12000, while the sum is 33.

The spelling of 51082213551 in words is "fifty-one billion, eighty-two million, two hundred thirteen thousand, five hundred fifty-one".