51043646123 has 8 divisors (see below), whose sum is σ = 54049272480. Its totient is φ = 48038359680.

The previous prime is 51043646051. The next prime is 51043646131. The reversal of 51043646123 is 32164634015.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 51043646123 - 2²⁶ = 50976537259 is a prime.

It is a super-2 number, since 2×51043646123² (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 (51043646153) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265538 + ... + 415448.

It is an arithmetic number, because the mean of its divisors is an integer number (6756159060).

Almost surely, 2^51043646123 is an apocalyptic number.

51043646123 is a deficient number, since it is larger than the sum of its proper divisors (3005626357).

51043646123 is a wasteful number, since it uses less digits than its factorization.

51043646123 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 169957.

The product of its (nonzero) digits is 51840, while the sum is 35.

The spelling of 51043646123 in words is "fifty-one billion, forty-three million, six hundred forty-six thousand, one hundred twenty-three".