849166661948 has 24 divisors (see below), whose sum is σ = 1637849108784. Its totient is φ = 382005619200.

The previous prime is 849166661911. The next prime is 849166661999.

849166661948 is nontrivially palindromic in base 10.

It is a super-2 number, since 2×849166661948² (a number of 25 digits) contains 22 as substring.

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, 99476363 + ... + 99484898.

It is an arithmetic number, because the mean of its divisors is an integer number (68243712866).

Almost surely, 2^849166661948 is an apocalyptic number.

It is an amenable number.

849166661948 is a deficient number, since it is larger than the sum of its proper divisors (788682446836).

849166661948 is a wasteful number, since it uses less digits than its factorization.

849166661948 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198961373 (or 198961371 counting only the distinct ones).

The product of its digits is 107495424, while the sum is 68.

The spelling of 849166661948 in words is "eight hundred forty-nine billion, one hundred sixty-six million, six hundred sixty-one thousand, nine hundred forty-eight".