64981044018946 has 16 divisors (see below), whose sum is σ = 106440789054528. Its totient is φ = 29506790532400.

The previous prime is 64981044018941. The next prime is 64981044019043.

64981044018946 is nontrivially palindromic in base 10.

It is not an unprimeable number, because it can be changed into a prime (64981044018941) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1502360785 + ... + 1502404036.

It is an arithmetic number, because the mean of its divisors is an integer number (6652549315908).

Almost surely, 2^{64981044018946} is an apocalyptic number.

64981044018946 is a deficient number, since it is larger than the sum of its proper divisors (41459745035582).

64981044018946 is a wasteful number, since it uses less digits than its factorization.

64981044018946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3004765817.

The product of its (nonzero) digits is 47775744, while the sum is 64.

The spelling of 64981044018946 in words is "sixty-four trillion, nine hundred eighty-one billion, forty-four million, eighteen thousand, nine hundred forty-six".