27879016500 has 72 divisors (see below), whose sum is σ = 87949018248. Its totient is φ = 7434403200.

The previous prime is 27879016471. The next prime is 27879016537. The reversal of 27879016500 is 561097872.

27879016500 is a `hidden beast` number, since 2 + 78 + 79 + 0 + 1 + 6 + 500 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 531118116 + 27347898384 = 23046^2 + 165372^2 .

It is a super-2 number, since 2×27879016500² (a number of 22 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 3093169 + ... + 3102168.

Almost surely, 2^27879016500 is an apocalyptic number.

27879016500 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

27879016500 is an abundant number, since it is smaller than the sum of its proper divisors (60070001748).

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

27879016500 is a wasteful number, since it uses less digits than its factorization.

27879016500 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6195362 (or 6195347 counting only the distinct ones).

The product of its (nonzero) digits is 211680, while the sum is 45.

The spelling of 27879016500 in words is "twenty-seven billion, eight hundred seventy-nine million, sixteen thousand, five hundred".