27497497747499 has 32 divisors (see below), whose sum is σ = 30317036327424. Its totient is φ = 24785522012160.

The previous prime is 27497497747487. The next prime is 27497497747519. The reversal of 27497497747499 is 99474779479472.

It is a happy number.

It is a de Polignac number, because none of the positive numbers 2^k-27497497747499 is a prime.

It is a super-2 number, since 2×27497497747499² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (27497497797499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 493085792 + ... + 493141554.

It is an arithmetic number, because the mean of its divisors is an integer number (947407385232).

Almost surely, 2^{27497497747499} is an apocalyptic number.

27497497747499 is a deficient number, since it is larger than the sum of its proper divisors (2819538579925).

27497497747499 is a wasteful number, since it uses less digits than its factorization.

27497497747499 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60947.

The product of its digits is 56458612224, while the sum is 89.

The spelling of 27497497747499 in words is "twenty-seven trillion, four hundred ninety-seven billion, four hundred ninety-seven million, seven hundred forty-seven thousand, four hundred ninety-nine".