27745347057 has 8 divisors (see below), whose sum is σ = 37001225184. Its totient is φ = 18493183488.

The previous prime is 27745347053. The next prime is 27745347073. The reversal of 27745347057 is 75074354772.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 27745347057 - 2² = 27745347053 is a prime.

It is a super-2 number, since 2×27745347057² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (27745347053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 911163 + ... + 941120.

It is an arithmetic number, because the mean of its divisors is an integer number (4625153148).

Almost surely, 2^27745347057 is an apocalyptic number.

It is an amenable number.

27745347057 is a deficient number, since it is larger than the sum of its proper divisors (9255878127).

27745347057 is a wasteful number, since it uses less digits than its factorization.

27745347057 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1857279.

The product of its (nonzero) digits is 5762400, while the sum is 51.

The spelling of 27745347057 in words is "twenty-seven billion, seven hundred forty-five million, three hundred forty-seven thousand, fifty-seven".