64035221966 has 4 divisors (see below), whose sum is σ = 96052832952. Its totient is φ = 32017610982.

The previous prime is 64035221963. The next prime is 64035221969. The reversal of 64035221966 is 66912253046.

It is a semiprime because it is the product of two primes.

It is an interprime number because it is at equal distance from previous prime (64035221963) and next prime (64035221969).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (64035221963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16008805490 + ... + 16008805493.

It is an arithmetic number, because the mean of its divisors is an integer number (24013208238).

Almost surely, 2^64035221966 is an apocalyptic number.

64035221966 is a deficient number, since it is larger than the sum of its proper divisors (32017610986).

64035221966 is a wasteful number, since it uses less digits than its factorization.

64035221966 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32017610985.

The product of its (nonzero) digits is 466560, while the sum is 44.

The spelling of 64035221966 in words is "sixty-four billion, thirty-five million, two hundred twenty-one thousand, nine hundred sixty-six".