51660820552773 has 8 divisors (see below), whose sum is σ = 68883018212736. Its totient is φ = 34439584964000.

The previous prime is 51660820552711. The next prime is 51660820552793. The reversal of 51660820552773 is 37725502806615.

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 51660820552773 - 2¹³ = 51660820544581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51660820552793) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 240392493 + ... + 240607298.

It is an arithmetic number, because the mean of its divisors is an integer number (8610377276592).

Almost surely, 2^{51660820552773} is an apocalyptic number.

It is an amenable number.

51660820552773 is a deficient number, since it is larger than the sum of its proper divisors (17222197659963).

51660820552773 is a wasteful number, since it uses less digits than its factorization.

51660820552773 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 481035595.

The product of its (nonzero) digits is 21168000, while the sum is 57.

The spelling of 51660820552773 in words is "fifty-one trillion, six hundred sixty billion, eight hundred twenty million, five hundred fifty-two thousand, seven hundred seventy-three".