27015709157 has 4 divisors (see below), whose sum is σ = 27055264320. Its totient is φ = 26976153996.

The previous prime is 27015709153. The next prime is 27015709199. The reversal of 27015709157 is 75190751072.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 27015709157 - 2² = 27015709153 is a prime.

It is a super-2 number, since 2×27015709157² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27015709153) 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, 19776557 + ... + 19777922.

It is an arithmetic number, because the mean of its divisors is an integer number (6763816080).

Almost surely, 2^27015709157 is an apocalyptic number.

It is an amenable number.

27015709157 is a deficient number, since it is larger than the sum of its proper divisors (39555163).

27015709157 is an equidigital number, since it uses as much as digits as its factorization.

27015709157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39555162.

The product of its (nonzero) digits is 154350, while the sum is 44.

The spelling of 27015709157 in words is "twenty-seven billion, fifteen million, seven hundred nine thousand, one hundred fifty-seven".