427781499850969 has 12 divisors (see below), whose sum is σ = 485374050488320. Its totient is φ = 376347360569400.

The previous prime is 427781499850967. The next prime is 427781499850993. The reversal of 427781499850969 is 969058994187724.

It is not a de Polignac number, because 427781499850969 - 2¹ = 427781499850967 is a prime.

It is a super-2 number, since 2×427781499850969² (a number of 30 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 427781499850969.

It is not an unprimeable number, because it can be changed into a prime (427781499850963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57022323609 + ... + 57022331110.

Almost surely, 2^{427781499850969} is an apocalyptic number.

It is an amenable number.

427781499850969 is a deficient number, since it is larger than the sum of its proper divisors (57592550637351).

427781499850969 is a wasteful number, since it uses less digits than its factorization.

427781499850969 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114044654772 (or 114044654761 counting only the distinct ones).

The product of its (nonzero) digits is 19752284160, while the sum is 88.

The spelling of 427781499850969 in words is "four hundred twenty-seven trillion, seven hundred eighty-one billion, four hundred ninety-nine million, eight hundred fifty thousand, nine hundred sixty-nine".