51145214411 has 4 divisors (see below), whose sum is σ = 51145827672. Its totient is φ = 51144601152.

The previous prime is 51145214401. The next prime is 51145214447. The reversal of 51145214411 is 11441254115.

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

It is a cyclic number.

It is not a de Polignac number, because 51145214411 - 2¹⁰ = 51145213387 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51145214401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 157286 + ... + 356411.

It is an arithmetic number, because the mean of its divisors is an integer number (12786456918).

Almost surely, 2^51145214411 is an apocalyptic number.

51145214411 is a deficient number, since it is larger than the sum of its proper divisors (613261).

51145214411 is an equidigital number, since it uses as much as digits as its factorization.

51145214411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 613260.

The product of its digits is 3200, while the sum is 29.

Adding to 51145214411 its reverse (11441254115), we get a palindrome (62586468526).

The spelling of 51145214411 in words is "fifty-one billion, one hundred forty-five million, two hundred fourteen thousand, four hundred eleven".