427781499850968 has 16 divisors (see below), whose sum is σ = 1069453749627480. Its totient is φ = 142593833283648.

The previous prime is 427781499850967. The next prime is 427781499850993. The reversal of 427781499850968 is 869058994187724.

It is a super-2 number, since 2×427781499850968² (a number of 30 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (427781499850963) 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, 8912114580205 + ... + 8912114580252.

Almost surely, 2^{427781499850968} is an apocalyptic number.

It is an amenable number.

427781499850968 is an abundant number, since it is smaller than the sum of its proper divisors (641672249776512).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

427781499850968 is a wasteful number, since it uses less digits than its factorization.

427781499850968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17824229160466 (or 17824229160462 counting only the distinct ones).

The product of its (nonzero) digits is 17557585920, while the sum is 87.

The spelling of 427781499850968 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-eight".