51466703721780 has 48 divisors (see below), whose sum is σ = 145382051594304. Its totient is φ = 13602998976000.

The previous prime is 51466703721739. The next prime is 51466703721787. The reversal of 51466703721780 is 8712730766415.

It is a self number, because there is not a number n which added to its sum of digits gives 51466703721780.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51466703721787) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3795472846 + ... + 3795486405.

It is an arithmetic number, because the mean of its divisors is an integer number (3028792741548).

Almost surely, 2^{51466703721780} is an apocalyptic number.

It is an amenable number.

51466703721780 is an abundant number, since it is smaller than the sum of its proper divisors (93915347872524).

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

51466703721780 is a wasteful number, since it uses less digits than its factorization.

51466703721780 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7590959376 (or 7590959374 counting only the distinct ones).

The product of its (nonzero) digits is 11854080, while the sum is 57.

The spelling of 51466703721780 in words is "fifty-one trillion, four hundred sixty-six billion, seven hundred three million, seven hundred twenty-one thousand, seven hundred eighty".