898921901644 has 12 divisors (see below), whose sum is σ = 1694122045504. Its totient is φ = 414887031504.

The previous prime is 898921901611. The next prime is 898921901659. The reversal of 898921901644 is 446109129898.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8643479772 + ... + 8643479875.

Almost surely, 2^898921901644 is an apocalyptic number.

It is an amenable number.

898921901644 is a deficient number, since it is larger than the sum of its proper divisors (795200143860).

898921901644 is a wasteful number, since it uses less digits than its factorization.

898921901644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17286959664 (or 17286959662 counting only the distinct ones).

The product of its (nonzero) digits is 8957952, while the sum is 61.

The spelling of 898921901644 in words is "eight hundred ninety-eight billion, nine hundred twenty-one million, nine hundred one thousand, six hundred forty-four".