51008840246473 has 4 divisors (see below), whose sum is σ = 51873396860880. Its totient is φ = 50144283632068.

The previous prime is 51008840246467. The next prime is 51008840246509. The reversal of 51008840246473 is 37464204880015.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-51008840246473 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 51008840246473.

It is not an unprimeable number, because it can be changed into a prime (51008840246443) 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, 432278307115 + ... + 432278307232.

It is an arithmetic number, because the mean of its divisors is an integer number (12968349215220).

Almost surely, 2^{51008840246473} is an apocalyptic number.

It is an amenable number.

51008840246473 is a deficient number, since it is larger than the sum of its proper divisors (864556614407).

51008840246473 is an equidigital number, since it uses as much as digits as its factorization.

51008840246473 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 864556614406.

The product of its (nonzero) digits is 5160960, while the sum is 52.

The spelling of 51008840246473 in words is "fifty-one trillion, eight billion, eight hundred forty million, two hundred forty-six thousand, four hundred seventy-three".