51320246462221 has 8 divisors (see below), whose sum is σ = 56481172294464. Its totient is φ = 46241895443520.

The previous prime is 51320246462167. The next prime is 51320246462237. The reversal of 51320246462221 is 12226464202315.

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 51320246462221 - 2³⁹ = 50770490648333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (51320246460221) 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, 20643702081 + ... + 20643704566.

It is an arithmetic number, because the mean of its divisors is an integer number (7060146536808).

Almost surely, 2^{51320246462221} is an apocalyptic number.

It is an amenable number.

51320246462221 is a deficient number, since it is larger than the sum of its proper divisors (5160925832243).

51320246462221 is a wasteful number, since it uses less digits than its factorization.

51320246462221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41287406771.

The product of its (nonzero) digits is 276480, while the sum is 40.

The spelling of 51320246462221 in words is "fifty-one trillion, three hundred twenty billion, two hundred forty-six million, four hundred sixty-two thousand, two hundred twenty-one".