64653640042132 has 24 divisors (see below), whose sum is σ = 120461266958760. Its totient is φ = 30257147105280.

The previous prime is 64653640042067. The next prime is 64653640042141. The reversal of 64653640042132 is 23124004635646.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 18505448825616 + 46148191216516 = 4301796^2 + 6793246^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2626476157 + ... + 2626500772.

It is an arithmetic number, because the mean of its divisors is an integer number (5019219456615).

Almost surely, 2^{64653640042132} is an apocalyptic number.

It is an amenable number.

64653640042132 is a deficient number, since it is larger than the sum of its proper divisors (55807626916628).

64653640042132 is a wasteful number, since it uses less digits than its factorization.

64653640042132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5252977131 (or 5252977129 counting only the distinct ones).

The product of its (nonzero) digits is 2488320, while the sum is 46.

Adding to 64653640042132 its reverse (23124004635646), we get a palindrome (87777644677778).

The spelling of 64653640042132 in words is "sixty-four trillion, six hundred fifty-three billion, six hundred forty million, forty-two thousand, one hundred thirty-two".