27212640245 has 48 divisors (see below), whose sum is σ = 39448632960. Its totient is φ = 17946907776.

The previous prime is 27212640241. The next prime is 27212640281. The reversal of 27212640245 is 54204621272.

It is not a de Polignac number, because 27212640245 - 2² = 27212640241 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (35).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27212640241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1861334 + ... + 1875896.

It is an arithmetic number, because the mean of its divisors is an integer number (821846520).

Almost surely, 2^27212640245 is an apocalyptic number.

It is an amenable number.

27212640245 is a deficient number, since it is larger than the sum of its proper divisors (12235992715).

27212640245 is a wasteful number, since it uses less digits than its factorization.

27212640245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14874 (or 14867 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 35.

The spelling of 27212640245 in words is "twenty-seven billion, two hundred twelve million, six hundred forty thousand, two hundred forty-five".