64143481536 has 42 divisors (see below), whose sum is σ = 183855710012. Its totient is φ = 21381160320.

The previous prime is 64143481489. The next prime is 64143481553. The reversal of 64143481536 is 63518434146.

64143481536 is a `hidden beast` number, since 6 + 4 + 1 + 4 + 34 + 81 + 536 = 666.

It is a super-2 number, since 2×64143481536² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 64143481491 and 64143481500.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 55679530 + ... + 55680681.

Almost surely, 2^64143481536 is an apocalyptic number.

It is an amenable number.

64143481536 is an abundant number, since it is smaller than the sum of its proper divisors (119712228476).

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

64143481536 is a wasteful number, since it uses less digits than its factorization.

64143481536 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 111360229 (or 111360216 counting only the distinct ones).

The product of its digits is 829440, while the sum is 45.

The spelling of 64143481536 in words is "sixty-four billion, one hundred forty-three million, four hundred eighty-one thousand, five hundred thirty-six".