51011718145 has 16 divisors (see below), whose sum is σ = 64896519168. Its totient is φ = 38425561920.

The previous prime is 51011718137. The next prime is 51011718167. The reversal of 51011718145 is 54181711015.

It is not a de Polignac number, because 51011718145 - 2³ = 51011718137 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51011718145.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4441669 + ... + 4453138.

It is an arithmetic number, because the mean of its divisors is an integer number (4056032448).

Almost surely, 2^51011718145 is an apocalyptic number.

It is an amenable number.

51011718145 is a deficient number, since it is larger than the sum of its proper divisors (13884801023).

51011718145 is a wasteful number, since it uses less digits than its factorization.

51011718145 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8894880.

The product of its (nonzero) digits is 5600, while the sum is 34.

The spelling of 51011718145 in words is "fifty-one billion, eleven million, seven hundred eighteen thousand, one hundred forty-five".