51000010061 has 32 divisors (see below), whose sum is σ = 68929222656. Its totient is φ = 36440280000.

The previous prime is 51000010057. The next prime is 51000010067. The reversal of 51000010061 is 16001000015.

It is a cyclic number.

It is not a de Polignac number, because 51000010061 - 2² = 51000010057 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51000010067) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 17555 + ... + 319856.

It is an arithmetic number, because the mean of its divisors is an integer number (2154038208).

Almost surely, 2^51000010061 is an apocalyptic number.

It is an amenable number.

51000010061 is a deficient number, since it is larger than the sum of its proper divisors (17929212595).

51000010061 is a wasteful number, since it uses less digits than its factorization.

51000010061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 337593.

The product of its (nonzero) digits is 30, while the sum is 14.

Adding to 51000010061 its reverse (16001000015), we get a palindrome (67001010076).

The spelling of 51000010061 in words is "fifty-one billion, ten thousand, sixty-one".