51135263324601 has 16 divisors (see below), whose sum is σ = 72853262380800. Its totient is φ = 31790514486528.

The previous prime is 51135263324599. The next prime is 51135263324611. The reversal of 51135263324601 is 10642336253115.

It is a happy number.

It is not a de Polignac number, because 51135263324601 - 2¹ = 51135263324599 is a prime.

It is a super-2 number, since 2×51135263324601² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51135263324611) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4599316561 + ... + 4599327678.

It is an arithmetic number, because the mean of its divisors is an integer number (4553328898800).

Almost surely, 2^{51135263324601} is an apocalyptic number.

51135263324601 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

It is an amenable number.

51135263324601 is a deficient number, since it is larger than the sum of its proper divisors (21717999056199).

51135263324601 is a wasteful number, since it uses less digits than its factorization.

51135263324601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9198644368.

The product of its (nonzero) digits is 388800, while the sum is 42.

Adding to 51135263324601 its reverse (10642336253115), we get a palindrome (61777599577716).

The spelling of 51135263324601 in words is "fifty-one trillion, one hundred thirty-five billion, two hundred sixty-three million, three hundred twenty-four thousand, six hundred one".