64469948394860 has 48 divisors (see below), whose sum is σ = 144263889139104. Its totient is φ = 24116446768128.

The previous prime is 64469948394833. The next prime is 64469948394947. The reversal of 64469948394860 is 6849384996446.

It is a super-2 number, since 2×64469948394860² (a number of 28 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 603823994 + ... + 603930753.

It is an arithmetic number, because the mean of its divisors is an integer number (3005497690398).

Almost surely, 2^{64469948394860} is an apocalyptic number.

It is an amenable number.

64469948394860 is an abundant number, since it is smaller than the sum of its proper divisors (79793940744244).

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

64469948394860 is a wasteful number, since it uses less digits than its factorization.

64469948394860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1207754930 (or 1207754928 counting only the distinct ones).

The product of its (nonzero) digits is 7739670528, while the sum is 80.

The spelling of 64469948394860 in words is "sixty-four trillion, four hundred sixty-nine billion, nine hundred forty-eight million, three hundred ninety-four thousand, eight hundred sixty".