64261518146 has 12 divisors (see below), whose sum is σ = 112129792038. Its totient is φ = 27540650592.

The previous prime is 64261518133. The next prime is 64261518157. The reversal of 64261518146 is 64181516246.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 63910368025 + 351150121 = 252805^2 + 18739^2 .

It is a junction number, because it is equal to n+sod(n) for n = 64261518097 and 64261518106.

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 327864791 + ... + 327864986.

Almost surely, 2^64261518146 is an apocalyptic number.

64261518146 is a deficient number, since it is larger than the sum of its proper divisors (47868273892).

64261518146 is a wasteful number, since it uses less digits than its factorization.

64261518146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 655729793 (or 655729786 counting only the distinct ones).

The product of its digits is 276480, while the sum is 44.

The spelling of 64261518146 in words is "sixty-four billion, two hundred sixty-one million, five hundred eighteen thousand, one hundred forty-six".