51051001110561 has 24 divisors (see below), whose sum is σ = 73760431511520. Its totient is φ = 34024726296000.

The previous prime is 51051001110553. The next prime is 51051001110583. The reversal of 51051001110561 is 16501110015015.

51051001110561 is a `hidden beast` number, since 51 + 0 + 51 + 0 + 0 + 1 + 1 + 1 + 0 + 561 = 666.

It is not a de Polignac number, because 51051001110561 - 2³ = 51051001110553 is a prime.

It is not an unprimeable number, because it can be changed into a prime (51051001110541) 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, 1333566741 + ... + 1333605021.

It is an arithmetic number, because the mean of its divisors is an integer number (3073351312980).

Almost surely, 2^{51051001110561} is an apocalyptic number.

It is an amenable number.

51051001110561 is a deficient number, since it is larger than the sum of its proper divisors (22709430400959).

51051001110561 is a wasteful number, since it uses less digits than its factorization.

51051001110561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74797 (or 74794 counting only the distinct ones).

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

Adding to 51051001110561 its reverse (16501110015015), we get a palindrome (67552111125576).

The spelling of 51051001110561 in words is "fifty-one trillion, fifty-one billion, one million, one hundred ten thousand, five hundred sixty-one".