51101550011601 has 24 divisors (see below), whose sum is σ = 74110248600960. Its totient is φ = 33930726676416.

The previous prime is 51101550011579. The next prime is 51101550011621. The reversal of 51101550011601 is 10611005510115.

51101550011601 is a `hidden beast` number, since 5 + 1 + 1 + 0 + 1 + 5 + 50 + 0 + 1 + 1 + 601 = 666.

It is not a de Polignac number, because 51101550011601 - 2⁵ = 51101550011569 is a prime.

It is a super-2 number, since 2×51101550011601² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51101550011621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8446485 + ... + 13173693.

It is an arithmetic number, because the mean of its divisors is an integer number (3087927025040).

Almost surely, 2^{51101550011601} is an apocalyptic number.

It is an amenable number.

51101550011601 is a deficient number, since it is larger than the sum of its proper divisors (23008698589359).

51101550011601 is a wasteful number, since it uses less digits than its factorization.

51101550011601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4732045 (or 4732042 counting only the distinct ones).

The product of its (nonzero) digits is 750, while the sum is 27.

Adding to 51101550011601 its reverse (10611005510115), we get a palindrome (61712555521716).

The spelling of 51101550011601 in words is "fifty-one trillion, one hundred one billion, five hundred fifty million, eleven thousand, six hundred one".