51215451132011 has 8 divisors (see below), whose sum is σ = 51937102040544. Its totient is φ = 50493808738240.

The previous prime is 51215451131969. The next prime is 51215451132029. The reversal of 51215451132011 is 11023115451215.

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 51215451132011 - 2¹⁸ = 51215450869867 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51215451132031) 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, 10510901 + ... + 14591433.

It is an arithmetic number, because the mean of its divisors is an integer number (6492137755068).

Almost surely, 2^{51215451132011} is an apocalyptic number.

51215451132011 is a deficient number, since it is larger than the sum of its proper divisors (721650908533).

51215451132011 is a wasteful number, since it uses less digits than its factorization.

51215451132011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4257381.

The product of its (nonzero) digits is 6000, while the sum is 32.

Adding to 51215451132011 its reverse (11023115451215), we get a palindrome (62238566583226).

The spelling of 51215451132011 in words is "fifty-one trillion, two hundred fifteen billion, four hundred fifty-one million, one hundred thirty-two thousand, eleven".