51420338138833 has 8 divisors (see below), whose sum is σ = 52309496883168. Its totient is φ = 50537599313664.

The previous prime is 51420338138797. The next prime is 51420338138861. The reversal of 51420338138833 is 33883183302415.

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 51420338138833 - 2¹⁷ = 51420338007761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (51420338133833) 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, 1604963635 + ... + 1604995672.

It is an arithmetic number, because the mean of its divisors is an integer number (6538687110396).

Almost surely, 2^{51420338138833} is an apocalyptic number.

It is an amenable number.

51420338138833 is a deficient number, since it is larger than the sum of its proper divisors (889158744335).

51420338138833 is a wasteful number, since it uses less digits than its factorization.

51420338138833 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3209959583.

The product of its (nonzero) digits is 4976640, while the sum is 52.

The spelling of 51420338138833 in words is "fifty-one trillion, four hundred twenty billion, three hundred thirty-eight million, one hundred thirty-eight thousand, eight hundred thirty-three".