505819439361 has 24 divisors (see below), whose sum is σ = 741171115776. Its totient is φ = 332376890400.

The previous prime is 505819439353. The next prime is 505819439381. The reversal of 505819439361 is 163934918505.

505819439361 is a `hidden beast` number, since 5 + 0 + 5 + 8 + 194 + 393 + 61 = 666.

It is not a de Polignac number, because 505819439361 - 2³ = 505819439353 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 505819439298 and 505819439307.

It is not an unprimeable number, because it can be changed into a prime (505819439311) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1044955 + ... + 1450368.

It is an arithmetic number, because the mean of its divisors is an integer number (30882129824).

Almost surely, 2^505819439361 is an apocalyptic number.

It is an amenable number.

505819439361 is a deficient number, since it is larger than the sum of its proper divisors (235351676415).

505819439361 is a wasteful number, since it uses less digits than its factorization.

505819439361 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2495653 (or 2495650 counting only the distinct ones).

The product of its (nonzero) digits is 3499200, while the sum is 54.

The spelling of 505819439361 in words is "five hundred five billion, eight hundred nineteen million, four hundred thirty-nine thousand, three hundred sixty-one".