51051051051 has 128 divisors (see below), whose sum is σ = 97736067072. Its totient is φ = 22809600000.

The previous prime is 51051051049. The next prime is 51051051083. The reversal of 51051051051 is 15015015015.

51051051051 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 51051051051 - 2¹ = 51051051049 is a prime.

51051051051 is a modest number, since divided by 51051051 gives 51 as remainder.

It is not an unprimeable number, because it can be changed into a prime (51051051011) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 5151201 + ... + 5161101.

It is an arithmetic number, because the mean of its divisors is an integer number (763563024).

Almost surely, 2^51051051051 is an apocalyptic number.

51051051051 is a gapful number since it is divisible by the number (51) formed by its first and last digit.

51051051051 is a deficient number, since it is larger than the sum of its proper divisors (46685016021).

51051051051 is a wasteful number, since it uses less digits than its factorization.

51051051051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10053.

The product of its (nonzero) digits is 625, while the sum is 24.

Adding to 51051051051 its reverse (15015015015), we get a palindrome (66066066066).

The spelling of 51051051051 in words is "fifty-one billion, fifty-one million, fifty-one thousand, fifty-one".