64544260102 has 24 divisors (see below), whose sum is σ = 112683470544. Its totient is φ = 27647009712.

The previous prime is 64544260097. The next prime is 64544260139. The reversal of 64544260102 is 20106244546.

It is a super-2 number, since 2×64544260102² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8503 + ... + 359389.

It is an arithmetic number, because the mean of its divisors is an integer number (4695144606).

Almost surely, 2^64544260102 is an apocalyptic number.

64544260102 is a deficient number, since it is larger than the sum of its proper divisors (48139210442).

64544260102 is a wasteful number, since it uses less digits than its factorization.

64544260102 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 352780 (or 352773 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 34.

The spelling of 64544260102 in words is "sixty-four billion, five hundred forty-four million, two hundred sixty thousand, one hundred two".