64544512046 has 16 divisors (see below), whose sum is σ = 112735429344. Its totient is φ = 27140010144.

The previous prime is 64544512037. The next prime is 64544512111. The reversal of 64544512046 is 64021544546.

It is a super-2 number, since 2×64544512046² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 64544511994 and 64544512012.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 43492865 + ... + 43494348.

It is an arithmetic number, because the mean of its divisors is an integer number (7045964334).

Almost surely, 2^64544512046 is an apocalyptic number.

64544512046 is a deficient number, since it is larger than the sum of its proper divisors (48190917298).

64544512046 is a wasteful number, since it uses less digits than its factorization.

64544512046 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86987275.

The product of its (nonzero) digits is 460800, while the sum is 41.

The spelling of 64544512046 in words is "sixty-four billion, five hundred forty-four million, five hundred twelve thousand, forty-six".