64989898946 has 16 divisors (see below), whose sum is σ = 112514339520. Its totient is φ = 27577042800.

The previous prime is 64989898933. The next prime is 64989898999.

64989898946 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×64989898946² (a number of 22 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22979456 + ... + 22982283.

It is an arithmetic number, because the mean of its divisors is an integer number (7032146220).

Almost surely, 2^64989898946 is an apocalyptic number.

64989898946 is a deficient number, since it is larger than the sum of its proper divisors (47524440574).

64989898946 is a wasteful number, since it uses less digits than its factorization.

64989898946 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45961849.

The product of its digits is 1934917632, while the sum is 80.

The spelling of 64989898946 in words is "sixty-four billion, nine hundred eighty-nine million, eight hundred ninety-eight thousand, nine hundred forty-six".