427149183816 has 96 divisors (see below), whose sum is σ = 1190394616320. Its totient is φ = 138287174400.

The previous prime is 427149183779. The next prime is 427149183841. The reversal of 427149183816 is 618381941724.

427149183816 is a `hidden beast` number, since 4 + 2 + 71 + 491 + 8 + 3 + 81 + 6 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 333861 + ... + 982731.

It is an arithmetic number, because the mean of its divisors is an integer number (12399943920).

Almost surely, 2^427149183816 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 427149183816, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (595197308160).

427149183816 is an abundant number, since it is smaller than the sum of its proper divisors (763245432504).

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

427149183816 is a wasteful number, since it uses less digits than its factorization.

427149183816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 649147 (or 649140 counting only the distinct ones).

The product of its digits is 2322432, while the sum is 54.

The spelling of 427149183816 in words is "four hundred twenty-seven billion, one hundred forty-nine million, one hundred eighty-three thousand, eight hundred sixteen".