27215752136 has 8 divisors (see below), whose sum is σ = 51029535270. Its totient is φ = 13607876064.

The previous prime is 27215752111. The next prime is 27215752139. The reversal of 27215752136 is 63125751272.

It can be written as a sum of positive squares in only one way, i.e., 25686472900 + 1529279236 = 160270^2 + 39106^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is a junction number, because it is equal to n+sod(n) for n = 27215752093 and 27215752102.

It is not an unprimeable number, because it can be changed into a prime (27215752139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1700984501 + ... + 1700984516.

Almost surely, 2^27215752136 is an apocalyptic number.

It is an amenable number.

27215752136 is a deficient number, since it is larger than the sum of its proper divisors (23813783134).

27215752136 is a wasteful number, since it uses less digits than its factorization.

27215752136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3401969023 (or 3401969019 counting only the distinct ones).

The product of its digits is 176400, while the sum is 41.

The spelling of 27215752136 in words is "twenty-seven billion, two hundred fifteen million, seven hundred fifty-two thousand, one hundred thirty-six".