27518350747 has 4 divisors (see below), whose sum is σ = 27670386016. Its totient is φ = 27366315480.

The previous prime is 27518350711. The next prime is 27518350801. The reversal of 27518350747 is 74705381572.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-27518350747 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 27518350747.

It is not an unprimeable number, because it can be changed into a prime (27518350147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76017363 + ... + 76017724.

It is an arithmetic number, because the mean of its divisors is an integer number (6917596504).

Almost surely, 2^27518350747 is an apocalyptic number.

27518350747 is a deficient number, since it is larger than the sum of its proper divisors (152035269).

27518350747 is a wasteful number, since it uses less digits than its factorization.

27518350747 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152035268.

The product of its (nonzero) digits is 1646400, while the sum is 49.

The spelling of 27518350747 in words is "twenty-seven billion, five hundred eighteen million, three hundred fifty thousand, seven hundred forty-seven".