51061319121 has 8 divisors (see below), whose sum is σ = 68706362560. Its totient is φ = 33728577552.

The previous prime is 51061319117. The next prime is 51061319123. The reversal of 51061319121 is 12191316015.

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

It is not a de Polignac number, because 51061319121 - 2² = 51061319117 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51061319123) 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 7 ways as a sum of consecutive naturals, for example, 78075085 + ... + 78075738.

It is an arithmetic number, because the mean of its divisors is an integer number (8588295320).

Almost surely, 2^51061319121 is an apocalyptic number.

It is an amenable number.

51061319121 is a deficient number, since it is larger than the sum of its proper divisors (17645043439).

51061319121 is a wasteful number, since it uses less digits than its factorization.

51061319121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 156150935.

The product of its (nonzero) digits is 1620, while the sum is 30.

The spelling of 51061319121 in words is "fifty-one billion, sixty-one million, three hundred nineteen thousand, one hundred twenty-one".