64887488478846 has 48 divisors (see below), whose sum is σ = 153373662074880. Its totient is φ = 19662460583760.

The previous prime is 64887488478829. The next prime is 64887488478853.

64887488478846 is a `hidden beast` number, since 6 + 4 + 8 + 8 + 7 + 488 + 4 + 7 + 88 + 46 = 666.

64887488478846 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×64887488478846² (a number of 28 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 (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6021045 + ... + 12885183.

It is an arithmetic number, because the mean of its divisors is an integer number (3195284626560).

Almost surely, 2^{64887488478846} is an apocalyptic number.

64887488478846 is a gapful number since it is divisible by the number (66) formed by its first and last digit.

64887488478846 is an abundant number, since it is smaller than the sum of its proper divisors (88486173596034).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

64887488478846 is a wasteful number, since it uses less digits than its factorization.

64887488478846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6911901 (or 6911898 counting only the distinct ones).

The product of its digits is 118380036096, while the sum is 90.

The spelling of 64887488478846 in words is "sixty-four trillion, eight hundred eighty-seven billion, four hundred eighty-eight million, four hundred seventy-eight thousand, eight hundred forty-six".