64003380381 has 6 divisors (see below), whose sum is σ = 92449327230. Its totient is φ = 42668920248.

The previous prime is 64003380361. The next prime is 64003380391. The reversal of 64003380381 is 18308330046.

It is a happy number.

64003380381 is a `hidden beast` number, since 640 + 0 + 3 + 3 + 8 + 0 + 3 + 8 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 55806975225 + 8196405156 = 236235^2 + 90534^2 .

It is not a de Polignac number, because 64003380381 - 2⁵ = 64003380349 is a prime.

It is a super-2 number, since 2×64003380381² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64003380361) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3555743346 + ... + 3555743363.

It is an arithmetic number, because the mean of its divisors is an integer number (15408221205).

Almost surely, 2^64003380381 is an apocalyptic number.

It is an amenable number.

64003380381 is a deficient number, since it is larger than the sum of its proper divisors (28445946849).

64003380381 is a wasteful number, since it uses less digits than its factorization.

64003380381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7111486715 (or 7111486712 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

The spelling of 64003380381 in words is "sixty-four billion, three million, three hundred eighty thousand, three hundred eighty-one".