51060617121511 has 4 divisors (see below), whose sum is σ = 51537819150792. Its totient is φ = 50583415092232.

The previous prime is 51060617121499. The next prime is 51060617121517. The reversal of 51060617121511 is 11512171606015.

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

It is a cyclic number.

It is not a de Polignac number, because 51060617121511 - 2¹⁵ = 51060617088743 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 (51060617121517) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 238601014480 + ... + 238601014693.

It is an arithmetic number, because the mean of its divisors is an integer number (12884454787698).

Almost surely, 2^{51060617121511} is an apocalyptic number.

51060617121511 is a deficient number, since it is larger than the sum of its proper divisors (477202029281).

51060617121511 is a wasteful number, since it uses less digits than its factorization.

51060617121511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 477202029280.

The product of its (nonzero) digits is 12600, while the sum is 37.

Adding to 51060617121511 its reverse (11512171606015), we get a palindrome (62572788727526).

The spelling of 51060617121511 in words is "fifty-one trillion, sixty billion, six hundred seventeen million, one hundred twenty-one thousand, five hundred eleven".