51044151011 has 4 divisors (see below), whose sum is σ = 58336172592. Its totient is φ = 43752129432.

The previous prime is 51044150981. The next prime is 51044151019. The reversal of 51044151011 is 11015144015.

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 51044151011 - 2²² = 51039956707 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51044151019) 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, 3646010780 + ... + 3646010793.

It is an arithmetic number, because the mean of its divisors is an integer number (14584043148).

Almost surely, 2^51044151011 is an apocalyptic number.

51044151011 is a deficient number, since it is larger than the sum of its proper divisors (7292021581).

51044151011 is an equidigital number, since it uses as much as digits as its factorization.

51044151011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7292021580.

The product of its (nonzero) digits is 400, while the sum is 23.

Adding to 51044151011 its reverse (11015144015), we get a palindrome (62059295026).

The spelling of 51044151011 in words is "fifty-one billion, forty-four million, one hundred fifty-one thousand, eleven".