51012016145 has 16 divisors (see below), whose sum is σ = 64477539840. Its totient is φ = 38636953344.

The previous prime is 51012016141. The next prime is 51012016147. The reversal of 51012016145 is 54161021015.

It is a cyclic number.

It is not a de Polignac number, because 51012016145 - 2² = 51012016141 is a prime.

It is a super-2 number, since 2×51012016145² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (51012016141) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22472 + ... + 320201.

It is an arithmetic number, because the mean of its divisors is an integer number (4029846240).

Almost surely, 2^51012016145 is an apocalyptic number.

It is an amenable number.

51012016145 is a deficient number, since it is larger than the sum of its proper divisors (13465523695).

51012016145 is a wasteful number, since it uses less digits than its factorization.

51012016145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 344264.

The product of its (nonzero) digits is 1200, while the sum is 26.

The spelling of 51012016145 in words is "fifty-one billion, twelve million, sixteen thousand, one hundred forty-five".