27153723309 has 4 divisors (see below), whose sum is σ = 36204964416. Its totient is φ = 18102482204.

The previous prime is 27153723307. The next prime is 27153723347. The reversal of 27153723309 is 90332735172.

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 27153723309 - 2¹ = 27153723307 is a prime.

It is a super-3 number, since 3×27153723309³ (a number of 32 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (27153723307) 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, 4525620549 + ... + 4525620554.

It is an arithmetic number, because the mean of its divisors is an integer number (9051241104).

Almost surely, 2^27153723309 is an apocalyptic number.

It is an amenable number.

27153723309 is a deficient number, since it is larger than the sum of its proper divisors (9051241107).

27153723309 is an equidigital number, since it uses as much as digits as its factorization.

27153723309 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9051241106.

The product of its (nonzero) digits is 238140, while the sum is 42.

The spelling of 27153723309 in words is "twenty-seven billion, one hundred fifty-three million, seven hundred twenty-three thousand, three hundred nine".