27099504864 has 36 divisors (see below), whose sum is σ = 77064217776. Its totient is φ = 9033168192.

The previous prime is 27099504833. The next prime is 27099504871. The reversal of 27099504864 is 46840599072.

27099504864 is a `hidden beast` number, since 2 + 70 + 9 + 9 + 504 + 8 + 64 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a self number, because there is not a number n which added to its sum of digits gives 27099504864.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 47047464 + ... + 47048039.

It is an arithmetic number, because the mean of its divisors is an integer number (2140672716).

Almost surely, 2^27099504864 is an apocalyptic number.

27099504864 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

27099504864 is an abundant number, since it is smaller than the sum of its proper divisors (49964712912).

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

27099504864 is a wasteful number, since it uses less digits than its factorization.

27099504864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94095519 (or 94095508 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 54.

The spelling of 27099504864 in words is "twenty-seven billion, ninety-nine million, five hundred four thousand, eight hundred sixty-four".