51003340145 has 4 divisors (see below), whose sum is σ = 61204008180. Its totient is φ = 40802672112.

The previous prime is 51003340133. The next prime is 51003340153. The reversal of 51003340145 is 54104330015.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6859649329 + 44143690816 = 82823^2 + 210104^2 .

It is a cyclic number.

It is not a de Polignac number, because 51003340145 - 2⁸ = 51003339889 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5100334010 + ... + 5100334019.

It is an arithmetic number, because the mean of its divisors is an integer number (15301002045).

Almost surely, 2^51003340145 is an apocalyptic number.

It is an amenable number.

51003340145 is a deficient number, since it is larger than the sum of its proper divisors (10200668035).

51003340145 is a wasteful number, since it uses less digits than its factorization.

51003340145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10200668034.

The product of its (nonzero) digits is 3600, while the sum is 26.

The spelling of 51003340145 in words is "fifty-one billion, three million, three hundred forty thousand, one hundred forty-five".