64660201388 has 24 divisors (see below), whose sum is σ = 117725282304. Its totient is φ = 31040830800.

The previous prime is 64660201381. The next prime is 64660201399. The reversal of 64660201388 is 88310206646.

It is not an unprimeable number, because it can be changed into a prime (64660201381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2037218 + ... + 2068713.

It is an arithmetic number, because the mean of its divisors is an integer number (4905220096).

Almost surely, 2^64660201388 is an apocalyptic number.

It is an amenable number.

64660201388 is a deficient number, since it is larger than the sum of its proper divisors (53065080916).

64660201388 is a wasteful number, since it uses less digits than its factorization.

64660201388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4106093 (or 4106091 counting only the distinct ones).

The product of its (nonzero) digits is 331776, while the sum is 44.

The spelling of 64660201388 in words is "sixty-four billion, six hundred sixty million, two hundred one thousand, three hundred eighty-eight".