50778205404361 has 4 divisors (see below), whose sum is σ = 50778970467732. Its totient is φ = 50777440340992.

The previous prime is 50778205404359. The next prime is 50778205404503. The reversal of 50778205404361 is 16340450287705.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 35072677883961 + 15705527520400 = 5922219^2 + 3963020^2 .

It is a cyclic number.

It is not a de Polignac number, because 50778205404361 - 2¹ = 50778205404359 is a prime.

It is a super-2 number, since 2×50778205404361² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 50778205404299 and 50778205404308.

It is not an unprimeable number, because it can be changed into a prime (50778205402361) 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, 382432120 + ... + 382564873.

It is an arithmetic number, because the mean of its divisors is an integer number (12694742616933).

Almost surely, 2^{50778205404361} is an apocalyptic number.

It is an amenable number.

50778205404361 is a deficient number, since it is larger than the sum of its proper divisors (765063371).

50778205404361 is an equidigital number, since it uses as much as digits as its factorization.

50778205404361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 765063370.

The product of its (nonzero) digits is 5644800, while the sum is 52.

The spelling of 50778205404361 in words is "fifty trillion, seven hundred seventy-eight billion, two hundred five million, four hundred four thousand, three hundred sixty-one".