8249347891644 has 24 divisors (see below), whose sum is σ = 20380741850448. Its totient is φ = 2588030711040.

The previous prime is 8249347891639. The next prime is 8249347891657. The reversal of 8249347891644 is 4461987439428.

It is a congruent number.

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, 20218989727 + ... + 20218990134.

It is an arithmetic number, because the mean of its divisors is an integer number (849197577102).

Almost surely, 2^{8249347891644} is an apocalyptic number.

It is an amenable number.

8249347891644 is an abundant number, since it is smaller than the sum of its proper divisors (12131393958804).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8249347891644 is a wasteful number, since it uses less digits than its factorization.

8249347891644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40437979885 (or 40437979883 counting only the distinct ones).

The product of its digits is 334430208, while the sum is 69.

The spelling of 8249347891644 in words is "eight trillion, two hundred forty-nine billion, three hundred forty-seven million, eight hundred ninety-one thousand, six hundred forty-four".