64157784633 has 12 divisors (see below), whose sum is σ = 97549848240. Its totient is φ = 40520705976.

The previous prime is 64157784601. The next prime is 64157784637. The reversal of 64157784633 is 33648775146.

It is a happy number.

64157784633 is a `hidden beast` number, since 6 + 4 + 1 + 577 + 8 + 4 + 63 + 3 = 666.

It is not a de Polignac number, because 64157784633 - 2⁵ = 64157784601 is a prime.

It is a Smith number, since the sum of its digits (54) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 64157784633.

It is not an unprimeable number, because it can be changed into a prime (64157784637) by changing a digit.

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 11 ways as a sum of consecutive naturals, for example, 187595691 + ... + 187596032.

It is an arithmetic number, because the mean of its divisors is an integer number (8129154020).

Almost surely, 2^64157784633 is an apocalyptic number.

It is an amenable number.

64157784633 is a deficient number, since it is larger than the sum of its proper divisors (33392063607).

64157784633 is a wasteful number, since it uses less digits than its factorization.

64157784633 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 375191748 (or 375191745 counting only the distinct ones).

The product of its digits is 10160640, while the sum is 54.

The spelling of 64157784633 in words is "sixty-four billion, one hundred fifty-seven million, seven hundred eighty-four thousand, six hundred thirty-three".