27745810157 has 32 divisors (see below), whose sum is σ = 32168209920. Its totient is φ = 23745415680.

The previous prime is 27745810097. The next prime is 27745810187. The reversal of 27745810157 is 75101854772.

It is not a de Polignac number, because 27745810157 - 2⁶ = 27745810093 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27745810187) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 831644 + ... + 864362.

It is an arithmetic number, because the mean of its divisors is an integer number (1005256560).

Almost surely, 2^27745810157 is an apocalyptic number.

It is an amenable number.

27745810157 is a deficient number, since it is larger than the sum of its proper divisors (4422399763).

27745810157 is a wasteful number, since it uses less digits than its factorization.

27745810157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32853.

The product of its (nonzero) digits is 548800, while the sum is 47.

The spelling of 27745810157 in words is "twenty-seven billion, seven hundred forty-five million, eight hundred ten thousand, one hundred fifty-seven".