51100010001001 has 24 divisors (see below), whose sum is σ = 58116839376960. Its totient is φ = 44657978366304.

The previous prime is 51100010000969. The next prime is 51100010001031. The reversal of 51100010001001 is 10010001000115.

It is not a de Polignac number, because 51100010001001 - 2⁵ = 51100010000969 is a prime.

It is a super-2 number, since 2×51100010001001² (a number of 28 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51100010001031) 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, 3824226 + ... + 10808548.

It is an arithmetic number, because the mean of its divisors is an integer number (2421534974040).

Almost surely, 2^{51100010001001} is an apocalyptic number.

It is an amenable number.

51100010001001 is a deficient number, since it is larger than the sum of its proper divisors (7016829375959).

51100010001001 is a wasteful number, since it uses less digits than its factorization.

51100010001001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6985933 (or 6985914 counting only the distinct ones).

The product of its (nonzero) digits is 5, while the sum is 10.

Adding to 51100010001001 its reverse (10010001000115), we get a palindrome (61110011001116).

The spelling of 51100010001001 in words is "fifty-one trillion, one hundred billion, ten million, one thousand, one".