63067816381 has 8 divisors (see below), whose sum is σ = 65485114200. Its totient is φ = 60666688320.

The previous prime is 63067816363. The next prime is 63067816411. The reversal of 63067816381 is 18361876036.

It can be written as a sum of positive squares in 4 ways, for example, as 1033944025 + 62033872356 = 32155^2 + 249066^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 63067816381 - 2¹³ = 63067808189 is a prime.

It is a super-2 number, since 2×63067816381² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (63067816321) 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 7 ways as a sum of consecutive naturals, for example, 4034490 + ... + 4050091.

It is an arithmetic number, because the mean of its divisors is an integer number (8185639275).

Almost surely, 2^63067816381 is an apocalyptic number.

It is an amenable number.

63067816381 is a deficient number, since it is larger than the sum of its proper divisors (2417297819).

63067816381 is a wasteful number, since it uses less digits than its factorization.

63067816381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8084879.

The product of its (nonzero) digits is 870912, while the sum is 49.

The spelling of 63067816381 in words is "sixty-three billion, sixty-seven million, eight hundred sixteen thousand, three hundred eighty-one".