51115771112001 has 8 divisors (see below), whose sum is σ = 68446869472800. Its totient is φ = 33930926746272.

The previous prime is 51115771111997. The next prime is 51115771112023. The reversal of 51115771112001 is 10021117751115.

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

It is not a de Polignac number, because 51115771112001 - 2² = 51115771111997 is a prime.

It is a super-2 number, since 2×51115771112001² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51115771112401) 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, 36563497951 + ... + 36563499348.

It is an arithmetic number, because the mean of its divisors is an integer number (8555858684100).

Almost surely, 2^{51115771112001} is an apocalyptic number.

It is an amenable number.

51115771112001 is a deficient number, since it is larger than the sum of its proper divisors (17331098360799).

51115771112001 is a wasteful number, since it uses less digits than its factorization.

51115771112001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73126997535.

The product of its (nonzero) digits is 2450, while the sum is 33.

Adding to 51115771112001 its reverse (10021117751115), we get a palindrome (61136888863116).

The spelling of 51115771112001 in words is "fifty-one trillion, one hundred fifteen billion, seven hundred seventy-one million, one hundred twelve thousand, one".