51000005106 has 16 divisors (see below), whose sum is σ = 113333344800. Its totient is φ = 17000001684.

The previous prime is 51000005099. The next prime is 51000005113. The reversal of 51000005106 is 60150000015.

It is an interprime number because it is at equal distance from previous prime (51000005099) and next prime (51000005113).

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 472222216 + ... + 472222323.

It is an arithmetic number, because the mean of its divisors is an integer number (7083334050).

Almost surely, 2^51000005106 is an apocalyptic number.

51000005106 is an abundant number, since it is smaller than the sum of its proper divisors (62333339694).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

51000005106 is a wasteful number, since it uses less digits than its factorization.

51000005106 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 944444550 (or 944444544 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

The spelling of 51000005106 in words is "fifty-one billion, five thousand, one hundred six".