51105228011 has 6 divisors (see below), whose sum is σ = 54288252900. Its totient is φ = 48099037856.

The previous prime is 51105227983. The next prime is 51105228061. The reversal of 51105228011 is 11082250115.

It is not a de Polignac number, because 51105228011 - 2⁶ = 51105227947 is a prime.

It is a super-2 number, since 2×51105228011² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51105228061) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 88417061 + ... + 88417638.

It is an arithmetic number, because the mean of its divisors is an integer number (9048042150).

Almost surely, 2^51105228011 is an apocalyptic number.

51105228011 is a deficient number, since it is larger than the sum of its proper divisors (3183024889).

51105228011 is a wasteful number, since it uses less digits than its factorization.

51105228011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176834733 (or 176834716 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 26.

Adding to 51105228011 its reverse (11082250115), we get a palindrome (62187478126).

The spelling of 51105228011 in words is "fifty-one billion, one hundred five million, two hundred twenty-eight thousand, eleven".