99257679188 has 6 divisors (see below), whose sum is σ = 173700938586. Its totient is φ = 49628839592.

The previous prime is 99257679167. The next prime is 99257679217. The reversal of 99257679188 is 88197675299.

It can be written as a sum of positive squares in only one way, i.e., 98735465284 + 522213904 = 314222^2 + 22852^2 .

It is a super-3 number, since 3×99257679188³ (a number of 34 digits) contains 333 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 12407209895 + ... + 12407209902.

It is an arithmetic number, because the mean of its divisors is an integer number (28950156431).

Almost surely, 2^99257679188 is an apocalyptic number.

It is an amenable number.

99257679188 is a deficient number, since it is larger than the sum of its proper divisors (74443259398).

99257679188 is a wasteful number, since it uses less digits than its factorization.

99257679188 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24814419801 (or 24814419799 counting only the distinct ones).

The product of its digits is 137168640, while the sum is 71.

The spelling of 99257679188 in words is "ninety-nine billion, two hundred fifty-seven million, six hundred seventy-nine thousand, one hundred eighty-eight".