64013423533451 has 32 divisors (see below), whose sum is σ = 76003415005056. Its totient is φ = 52773285888000.

The previous prime is 64013423533333. The next prime is 64013423533463. The reversal of 64013423533451 is 15433532431046.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 64013423533451 - 2¹⁰ = 64013423532427 is a prime.

It is not an unprimeable number, because it can be changed into a prime (64013423539451) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 45844331 + ... + 47220011.

It is an arithmetic number, because the mean of its divisors is an integer number (2375106718908).

Almost surely, 2^{64013423533451} is an apocalyptic number.

64013423533451 is a deficient number, since it is larger than the sum of its proper divisors (11989991471605).

64013423533451 is a wasteful number, since it uses less digits than its factorization.

64013423533451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1378023.

The product of its (nonzero) digits is 1555200, while the sum is 44.

Adding to 64013423533451 its reverse (15433532431046), we get a palindrome (79446955964497).

The spelling of 64013423533451 in words is "sixty-four trillion, thirteen billion, four hundred twenty-three million, five hundred thirty-three thousand, four hundred fifty-one".